avconv_opt.c:1749: error: Null Dereference
  pointer `today` last assigned on line 1747 could be null and is dereferenced at line 1749, column 69.

avconv_opt.c:1743:1: start of procedure opt_vstats()
1741. }
1742. 
1743. static int opt_vstats(void *optctx, const char *opt, const char *arg)
      ^
1744. {
1745.     char filename[40];

avconv_opt.c:1746:5: 
1744. {
1745.     char filename[40];
1746.     time_t today2 = time(NULL);
          ^
1747.     struct tm *today = localtime(&today2);
1748. 

avconv_opt.c:1747:5: 
1745.     char filename[40];
1746.     time_t today2 = time(NULL);
1747.     struct tm *today = localtime(&today2);
          ^
1748. 
1749.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv_opt.c:1749:5: 
1747.     struct tm *today = localtime(&today2);
1748. 
1749.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
1750.              today->tm_sec);
1751.     return opt_vstats_file(NULL, opt, filename);
