libavcodec/dca.c:1501: error: Uninitialized Value
  The value read from extensions_mask was never initialized.

libavcodec/dca.c:1501:9: 
1499.     skip_bits_long(&s->gb, header_pos + header_size * 8 - get_bits_count(&s->gb));
1500. 
1501.     if (extensions_mask & DCA_EXT_EXSS_XLL)
              ^
1502.         s->profile = FF_PROFILE_DTS_HD_MA;
1503.     else if (extensions_mask & DCA_EXT_EXSS_XBR)
