libavcodec/dvbsubdec.c:408: error: Uninitialized Value
  The value read from b was never initialized.

libavcodec/dvbsubdec.c:408:9: 
406.             }
407.         }
408.         default_clut.clut256[i] = RGBA(r, g, b, a);
             ^
409.     }
410. 
