avconv.c:4713: error: Null Dereference
  pointer `today` last assigned on line 4711 could be null and is dereferenced at line 4713, column 69.

avconv.c:4707:1: start of procedure opt_vstats()
4705. }
4706. 
4707. static int opt_vstats(const char *opt, const char *arg)
      ^
4708. {
4709.     char filename[40];

avconv.c:4710:5: 
4708. {
4709.     char filename[40];
4710.     time_t today2 = time(NULL);
          ^
4711.     struct tm *today = localtime(&today2);
4712. 

avconv.c:4711:5: 
4709.     char filename[40];
4710.     time_t today2 = time(NULL);
4711.     struct tm *today = localtime(&today2);
          ^
4712. 
4713.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv.c:4713:5: 
4711.     struct tm *today = localtime(&today2);
4712. 
4713.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
4714.              today->tm_sec);
4715.     return opt_vstats_file(opt, filename);
