avconv.c:4323: error: Null Dereference
  pointer `today` last assigned on line 4321 could be null and is dereferenced at line 4323, column 69.

avconv.c:4317:1: start of procedure opt_vstats()
4315. }
4316. 
4317. static int opt_vstats(const char *opt, const char *arg)
      ^
4318. {
4319.     char filename[40];

avconv.c:4320:5: 
4318. {
4319.     char filename[40];
4320.     time_t today2 = time(NULL);
          ^
4321.     struct tm *today = localtime(&today2);
4322. 

avconv.c:4321:5: 
4319.     char filename[40];
4320.     time_t today2 = time(NULL);
4321.     struct tm *today = localtime(&today2);
          ^
4322. 
4323.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv.c:4323:5: 
4321.     struct tm *today = localtime(&today2);
4322. 
4323.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
4324.              today->tm_sec);
4325.     return opt_vstats_file(opt, filename);
