libavformat/matroskadec.c:992: error: Memory Leak
  memory dynamically allocated by call to `av_realloc()` at line 992, column 24 is not reachable after line 992, column 13.

libavformat/matroskadec.c:976:1: start of procedure matroska_decode_buffer()
974. }
975. 
976. static int
     ^
977. matroska_decode_buffer(uint8_t** buf, int* buf_size, MatroskaTrack *track)
978. {

libavformat/matroskadec.c:979:5: 
977. matroska_decode_buffer(uint8_t** buf, int* buf_size, MatroskaTrack *track)
978. {
979.     uint8_t* data = *buf;
         ^
980.     int isize = *buf_size;
981.     uint8_t* pkt_data = NULL;

libavformat/matroskadec.c:980:5: 
978. {
979.     uint8_t* data = *buf;
980.     int isize = *buf_size;
         ^
981.     uint8_t* pkt_data = NULL;
982.     int pkt_size = isize;

libavformat/matroskadec.c:981:5: 
979.     uint8_t* data = *buf;
980.     int isize = *buf_size;
981.     uint8_t* pkt_data = NULL;
         ^
982.     int pkt_size = isize;
983.     int result = 0;

libavformat/matroskadec.c:982:5: 
980.     int isize = *buf_size;
981.     uint8_t* pkt_data = NULL;
982.     int pkt_size = isize;
         ^
983.     int result = 0;
984.     int olen;

libavformat/matroskadec.c:983:5: 
981.     uint8_t* pkt_data = NULL;
982.     int pkt_size = isize;
983.     int result = 0;
         ^
984.     int olen;
985. 

libavformat/matroskadec.c:986:5: 
984.     int olen;
985. 
986.     switch (track->encoding_algo) {
         ^
987.     case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
988.         return track->encoding_settings_len;

libavformat/matroskadec.c:987:5: Switch condition is false. Skipping switch case
985. 
986.     switch (track->encoding_algo) {
987.     case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
         ^
988.         return track->encoding_settings_len;
989.     case MATROSKA_TRACK_ENCODING_COMP_LZO:

libavformat/matroskadec.c:989:5: Switch condition is true. Entering switch case
987.     case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
988.         return track->encoding_settings_len;
989.     case MATROSKA_TRACK_ENCODING_COMP_LZO:
         ^
990.         do {
991.             olen = pkt_size *= 3;

libavformat/matroskadec.c:991:13: 
989.     case MATROSKA_TRACK_ENCODING_COMP_LZO:
990.         do {
991.             olen = pkt_size *= 3;
                 ^
992.             pkt_data = av_realloc(pkt_data,
993.                                   pkt_size+LZO_OUTPUT_PADDING);

libavformat/matroskadec.c:992:13: 
990.         do {
991.             olen = pkt_size *= 3;
992.             pkt_data = av_realloc(pkt_data,
                 ^
993.                                   pkt_size+LZO_OUTPUT_PADDING);
994.             result = lzo1x_decode(pkt_data, &olen, data, &isize);

libavutil/mem.c:94:1: start of procedure av_realloc()
  92. }
  93. 
  94. void *av_realloc(void *ptr, unsigned int size)
      ^
  95. {
  96. #ifdef CONFIG_MEMALIGN_HACK

libavutil/mem.c:101:8: Taking false branch
   99. 
  100.     /* let's disallow possible ambiguous cases */
  101.     if(size > (INT_MAX-16) )
              ^
  102.         return NULL;
  103. 

libavutil/mem.c:110:5: 
  108.     return (char*)realloc((char*)ptr - diff, size + diff) + diff;
  109. #else
  110.     return realloc(ptr, size);
           ^
  111. #endif
  112. }

libavutil/mem.c:112:1: return from a call to av_realloc
  110.     return realloc(ptr, size);
  111. #endif
  112. }
       ^
  113. 
  114. void av_free(void *ptr)

libavformat/matroskadec.c:994:13: Skipping lzo1x_decode(): empty list of specs
992.             pkt_data = av_realloc(pkt_data,
993.                                   pkt_size+LZO_OUTPUT_PADDING);
994.             result = lzo1x_decode(pkt_data, &olen, data, &isize);
                 ^
995.         } while (result==LZO_OUTPUT_FULL && pkt_size<10000000);
996.         if (result)

libavformat/matroskadec.c:995:18: Loop condition is true. Entering loop body
993.                                   pkt_size+LZO_OUTPUT_PADDING);
994.             result = lzo1x_decode(pkt_data, &olen, data, &isize);
995.         } while (result==LZO_OUTPUT_FULL && pkt_size<10000000);
                      ^
996.         if (result)
997.             goto failed;

libavformat/matroskadec.c:995:45: Loop condition is true. Entering loop body
993.                                   pkt_size+LZO_OUTPUT_PADDING);
994.             result = lzo1x_decode(pkt_data, &olen, data, &isize);
995.         } while (result==LZO_OUTPUT_FULL && pkt_size<10000000);
                                                 ^
996.         if (result)
997.             goto failed;

libavformat/matroskadec.c:991:13: 
989.     case MATROSKA_TRACK_ENCODING_COMP_LZO:
990.         do {
991.             olen = pkt_size *= 3;
                 ^
992.             pkt_data = av_realloc(pkt_data,
993.                                   pkt_size+LZO_OUTPUT_PADDING);

libavformat/matroskadec.c:992:13: 
990.         do {
991.             olen = pkt_size *= 3;
992.             pkt_data = av_realloc(pkt_data,
                 ^
993.                                   pkt_size+LZO_OUTPUT_PADDING);
994.             result = lzo1x_decode(pkt_data, &olen, data, &isize);

libavutil/mem.c:94:1: start of procedure av_realloc()
  92. }
  93. 
  94. void *av_realloc(void *ptr, unsigned int size)
      ^
  95. {
  96. #ifdef CONFIG_MEMALIGN_HACK

libavutil/mem.c:101:8: Taking true branch
   99. 
  100.     /* let's disallow possible ambiguous cases */
  101.     if(size > (INT_MAX-16) )
              ^
  102.         return NULL;
  103. 

libavutil/mem.c:102:9: 
  100.     /* let's disallow possible ambiguous cases */
  101.     if(size > (INT_MAX-16) )
  102.         return NULL;
               ^
  103. 
  104. #ifdef CONFIG_MEMALIGN_HACK

libavutil/mem.c:112:1: return from a call to av_realloc
  110.     return realloc(ptr, size);
  111. #endif
  112. }
       ^
  113. 
  114. void av_free(void *ptr)
