libavformat/wavdec.c:207: error: Uninitialized Value
  The value read from data_size was never initialized.

libavformat/wavdec.c:207:5: 
205. static int wav_read_header(AVFormatContext *s)
206. {
207.     int64_t size, av_uninit(data_size);
         ^
208.     int64_t sample_count = 0;
209.     int rf64;
