libavformat/xwma.c:45: error: Uninitialized Value
  The value read from data_size was never initialized.

libavformat/xwma.c:45:5: 
43. static int xwma_read_header(AVFormatContext *s)
44. {
45.     int64_t size, av_uninit(data_size);
        ^
46.     int ret;
47.     uint32_t dpds_table_size = 0;
