libavformat/xwma.c:42: error: Uninitialized Value
  The value read from data_size was never initialized.

libavformat/xwma.c:42:5: 
40. static int xwma_read_header(AVFormatContext *s, AVFormatParameters *ap)
41. {
42.     int64_t size, av_uninit(data_size);
        ^
43.     int ret;
44.     uint32_t dpds_table_size = 0;
