avconv_opt.c:1895: error: Null Dereference
  pointer `today` last assigned on line 1893 could be null and is dereferenced at line 1895, column 69.

avconv_opt.c:1889:1: start of procedure opt_vstats()
1887. }
1888. 
1889. static int opt_vstats(void *optctx, const char *opt, const char *arg)
      ^
1890. {
1891.     char filename[40];

avconv_opt.c:1892:5: 
1890. {
1891.     char filename[40];
1892.     time_t today2 = time(NULL);
          ^
1893.     struct tm *today = localtime(&today2);
1894. 

avconv_opt.c:1893:5: 
1891.     char filename[40];
1892.     time_t today2 = time(NULL);
1893.     struct tm *today = localtime(&today2);
          ^
1894. 
1895.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,

avconv_opt.c:1895:5: 
1893.     struct tm *today = localtime(&today2);
1894. 
1895.     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
          ^
1896.              today->tm_sec);
1897.     return opt_vstats_file(NULL, opt, filename);
