libavformat/rtsp.c:1785: error: Null Dereference
  pointer `content` last assigned on line 1779 could be null and is dereferenced at line 1785, column 5.

libavformat/rtsp.c:1766:1: start of procedure sdp_read_header()
1764. }
1765. 
1766. static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
      ^
1767. {
1768.     RTSPState *rt = s->priv_data;

libavformat/rtsp.c:1768:5: 
1766. static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
1767. {
1768.     RTSPState *rt = s->priv_data;
          ^
1769.     RTSPStream *rtsp_st;
1770.     int size, i, err;

libavformat/rtsp.c:1774:10: 
1772.     char url[1024];
1773. 
1774.     if (!ff_network_init())
               ^
1775.         return AVERROR(EIO);
1776. 

libavformat/network.h:69:1: start of procedure ff_network_init()
  67. int ff_socket_nonblock(int socket, int enable);
  68. 
  69. static inline int ff_network_init(void)
      ^
  70. {
  71. #if HAVE_WINSOCK2_H

libavformat/network.h:76:5: 
  74.         return 0;
  75. #endif
  76.     return 1;
          ^
  77. }
  78. 

libavformat/network.h:77:1: return from a call to ff_network_init
  75. #endif
  76.     return 1;
  77. }
      ^
  78. 
  79. static inline int ff_network_wait_fd(int fd, int write)

libavformat/rtsp.c:1774:10: Taking false branch
1772.     char url[1024];
1773. 
1774.     if (!ff_network_init())
               ^
1775.         return AVERROR(EIO);
1776. 

libavformat/rtsp.c:1779:5: 
1777.     /* read the whole sdp file */
1778.     /* XXX: better loading */
1779.     content = av_malloc(SDP_MAX_SIZE);
          ^
1780.     size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
1781.     if (size <= 0) {

libavutil/mem.c:64:1: start of procedure av_malloc()
  62.    linker will do it automatically. */
  63. 
  64. void *av_malloc(size_t size)
      ^
  65. {
  66.     void *ptr = NULL;

libavutil/mem.c:66:5: 
  64. void *av_malloc(size_t size)
  65. {
  66.     void *ptr = NULL;
          ^
  67. #if CONFIG_MEMALIGN_HACK
  68.     long diff;

libavutil/mem.c:72:8: Taking false branch
  70. 
  71.     /* let's disallow possible ambiguous cases */
  72.     if(size > (INT_MAX-32) )
             ^
  73.         return NULL;
  74. 

libavutil/mem.c:83:9: Taking true branch
  81.     ((char*)ptr)[-1]= diff;
  82. #elif HAVE_POSIX_MEMALIGN
  83.     if (posix_memalign(&ptr,32,size))
              ^
  84.         ptr = NULL;
  85. #elif HAVE_MEMALIGN

libavutil/mem.c:84:9: 
  82. #elif HAVE_POSIX_MEMALIGN
  83.     if (posix_memalign(&ptr,32,size))
  84.         ptr = NULL;
              ^
  85. #elif HAVE_MEMALIGN
  86.     ptr = memalign(32,size);

libavutil/mem.c:114:5: 
  112.     ptr = malloc(size);
  113. #endif
  114.     return ptr;
           ^
  115. }
  116. 

libavutil/mem.c:115:1: return from a call to av_malloc
  113. #endif
  114.     return ptr;
  115. }
       ^
  116. 
  117. void *av_realloc(void *ptr, size_t size)

libavformat/rtsp.c:1780:5: Skipping avio_read(): empty list of specs
1778.     /* XXX: better loading */
1779.     content = av_malloc(SDP_MAX_SIZE);
1780.     size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
          ^
1781.     if (size <= 0) {
1782.         av_free(content);

libavformat/rtsp.c:1781:9: Taking false branch
1779.     content = av_malloc(SDP_MAX_SIZE);
1780.     size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
1781.     if (size <= 0) {
              ^
1782.         av_free(content);
1783.         return AVERROR_INVALIDDATA;

libavformat/rtsp.c:1785:5: 
1783.         return AVERROR_INVALIDDATA;
1784.     }
1785.     content[size] ='\0';
          ^
1786. 
1787.     err = ff_sdp_parse(s, content);
