libavformat/mxfenc.c:1377: error: Null Dereference
  pointer `time_is_forbidden_due_to_security_issues` last assigned on line 1376 could be null and is dereferenced at line 1377, column 23.

libavformat/mxfenc.c:1374:1: start of procedure mxf_parse_timestamp()
1372. }
1373. 
1374. static uint64_t mxf_parse_timestamp(time_t timestamp)
      ^
1375. {
1376.     struct tm *time = gmtime(&timestamp);

libavformat/mxfenc.c:1376:5: 
1374. static uint64_t mxf_parse_timestamp(time_t timestamp)
1375. {
1376.     struct tm *time = gmtime(&timestamp);
          ^
1377.     return (uint64_t)(time->tm_year+1900) << 48 |
1378.            (uint64_t)(time->tm_mon+1)     << 40 |

libavformat/mxfenc.c:1377:5: 
1375. {
1376.     struct tm *time = gmtime(&timestamp);
1377.     return (uint64_t)(time->tm_year+1900) << 48 |
          ^
1378.            (uint64_t)(time->tm_mon+1)     << 40 |
1379.            (uint64_t) time->tm_mday       << 32 |
