libavformat/oggenc.c:215: error: Null Dereference
  pointer `this_pktl` last assigned on line 214 could be null and is dereferenced at line 215, column 9.

libavformat/oggenc.c:205:1: start of procedure ogg_interleave_per_granule()
203. }
204. 
205. int ogg_interleave_per_granule(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
     ^
206. {
207.     AVPacketList *pktl, **next_point, *this_pktl;

libavformat/oggenc.c:208:5: 
206. {
207.     AVPacketList *pktl, **next_point, *this_pktl;
208.     int stream_count = 0;
         ^
209.     int streams[MAX_STREAMS] = {0};
210.     int interleaved = 0;

libavformat/oggenc.c:209:5: 
207.     AVPacketList *pktl, **next_point, *this_pktl;
208.     int stream_count = 0;
209.     int streams[MAX_STREAMS] = {0};
         ^
210.     int interleaved = 0;
211. 

libavformat/oggenc.c:210:5: 
208.     int stream_count = 0;
209.     int streams[MAX_STREAMS] = {0};
210.     int interleaved = 0;
         ^
211. 
212.     if (pkt) {

libavformat/oggenc.c:212:9: Taking true branch
210.     int interleaved = 0;
211. 
212.     if (pkt) {
             ^
213.         AVStream *st = s->streams[pkt->stream_index];
214.         this_pktl = av_mallocz(sizeof(AVPacketList));

libavformat/oggenc.c:213:9: 
211. 
212.     if (pkt) {
213.         AVStream *st = s->streams[pkt->stream_index];
             ^
214.         this_pktl = av_mallocz(sizeof(AVPacketList));
215.         this_pktl->pkt = *pkt;

libavformat/oggenc.c:214:9: 
212.     if (pkt) {
213.         AVStream *st = s->streams[pkt->stream_index];
214.         this_pktl = av_mallocz(sizeof(AVPacketList));
             ^
215.         this_pktl->pkt = *pkt;
216.         if (pkt->destruct == av_destruct_packet)

libavutil/mem.c:132:1: start of procedure av_mallocz()
  130. }
  131. 
  132. void *av_mallocz(unsigned int size)
       ^
  133. {
  134.     void *ptr = av_malloc(size);

libavutil/mem.c:134:5: 
  132. void *av_mallocz(unsigned int size)
  133. {
  134.     void *ptr = av_malloc(size);
           ^
  135.     if (ptr)
  136.         memset(ptr, 0, size);

libavutil/mem.c:42:1: start of procedure av_malloc()
    40.    linker will do it automatically */
    41. 
    42. void *av_malloc(unsigned int size)
        ^
    43. {
    44.     void *ptr;

libavutil/mem.c:50:8: Taking false branch
    48. 
    49.     /* let's disallow possible ambiguous cases */
    50.     if(size > (INT_MAX-16) )
               ^
    51.         return NULL;
    52. 

libavutil/mem.c:61:5: Skipping memalign(): method has no implementation
    59.     ((char*)ptr)[-1]= diff;
    60. #elif defined (HAVE_MEMALIGN)
    61.     ptr = memalign(16,size);
            ^
    62.     /* Why 64?
    63.        Indeed, we should align it:

libavutil/mem.c:91:5: 
    89.     ptr = malloc(size);
    90. #endif
    91.     return ptr;
            ^
    92. }
    93. 

libavutil/mem.c:92:1: return from a call to av_malloc
    90. #endif
    91.     return ptr;
    92. }
        ^
    93. 
    94. void *av_realloc(void *ptr, unsigned int size)

libavutil/mem.c:135:9: Taking false branch
  133. {
  134.     void *ptr = av_malloc(size);
  135.     if (ptr)
               ^
  136.         memset(ptr, 0, size);
  137.     return ptr;

libavutil/mem.c:137:5: 
  135.     if (ptr)
  136.         memset(ptr, 0, size);
  137.     return ptr;
           ^
  138. }
  139. 

libavutil/mem.c:138:1: return from a call to av_mallocz
  136.         memset(ptr, 0, size);
  137.     return ptr;
  138. }
       ^
  139. 
  140. char *av_strdup(const char *s)

libavformat/oggenc.c:215:9: 
213.         AVStream *st = s->streams[pkt->stream_index];
214.         this_pktl = av_mallocz(sizeof(AVPacketList));
215.         this_pktl->pkt = *pkt;
             ^
216.         if (pkt->destruct == av_destruct_packet)
217.             pkt->destruct = NULL; // not shared -> must keep original from being freed
