avconv.c:4684: error: Null Dereference
  pointer `today` last assigned on line 4682 could be null and is dereferenced at line 4684, column 69.

avconv.c:4678:1: start of procedure opt_vstats()
4676. }
4677. 
4678. static int opt_vstats(const char *opt, const char *arg)
      ^
4679. {
4680.     char filename[40];

avconv.c:4681:5: 
4679. {
4680.     char filename[40];
4681.     time_t today2 = time(NULL);
          ^
4682.     struct tm *today = localtime(&today2);
4683. 

avconv.c:4682:5: 
4680.     char filename[40];
4681.     time_t today2 = time(NULL);
4682.     struct tm *today = localtime(&today2);
          ^
4683. 
4684.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv.c:4684:5: 
4682.     struct tm *today = localtime(&today2);
4683. 
4684.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
4685.              today->tm_sec);
4686.     return opt_vstats_file(opt, filename);
