avconv.c:1906: error: Uninitialized Value
  The value read from *size was never initialized.

avconv.c:1906:17: 
1904.                     exit_program(1);
1905.                 }
1906.                 *size += ret;
                      ^
1907.                 if (ost->logfile && enc->stats_out) {
1908.                     fprintf(ost->logfile, "%s", enc->stats_out);
