libavcodec/ac3.c:188: error: Uninitialized Value
  The value read from excite[_] was never initialized.

libavcodec/ac3.c:188:22: 
186.             excite[band] += tmp >> 2;
187.         }
188.         mask[band] = FFMAX(ff_ac3_hearing_threshold_tab[band >> s->sr_shift][s->sr_code], excite[band]);
                          ^
189.     }
190. 
