libavcodec/dca.c:1579: error: Uninitialized Value
  The value read from extensions_mask was never initialized.

libavcodec/dca.c:1579:9: 
1577.     if (!(extensions_mask & DCA_EXT_CORE))
1578.         av_log(s->avctx, AV_LOG_WARNING, "DTS core detection mismatch.\n");
1579.     if ((extensions_mask & DCA_CORE_EXTS) != s->core_ext_mask)
              ^
1580.         av_log(s->avctx, AV_LOG_WARNING,
1581.                "DTS extensions detection mismatch (%d, %d)\n",
