libavcodec/dca.c:1524: error: Uninitialized Value
  The value read from extensions_mask was never initialized.

libavcodec/dca.c:1524:9: 
1522.     if (!(extensions_mask & DCA_EXT_CORE))
1523.         av_log(s->avctx, AV_LOG_WARNING, "DTS core detection mismatch.\n");
1524.     if ((extensions_mask & DCA_CORE_EXTS) != s->core_ext_mask)
              ^
1525.         av_log(s->avctx, AV_LOG_WARNING, "DTS extensions detection mismatch (%d, %d)\n",
1526.                extensions_mask & DCA_CORE_EXTS, s->core_ext_mask);
