avconv.c:4104: error: Null Dereference
  pointer `today` last assigned on line 4102 could be null and is dereferenced at line 4104, column 69.

avconv.c:4098:1: start of procedure opt_vstats()
4096. }
4097. 
4098. static int opt_vstats(const char *opt, const char *arg)
      ^
4099. {
4100.     char filename[40];

avconv.c:4101:5: 
4099. {
4100.     char filename[40];
4101.     time_t today2 = time(NULL);
          ^
4102.     struct tm *today = localtime(&today2);
4103. 

avconv.c:4102:5: 
4100.     char filename[40];
4101.     time_t today2 = time(NULL);
4102.     struct tm *today = localtime(&today2);
          ^
4103. 
4104.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv.c:4104:5: 
4102.     struct tm *today = localtime(&today2);
4103. 
4104.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
4105.              today->tm_sec);
4106.     return opt_vstats_file(opt, filename);
