libavcodec/ac3.c:152: error: Uninitialized Value
  The value read from excite[_] was never initialized.

libavcodec/ac3.c:152:21: 
150.             excite[bin] += tmp >> 2;
151.         }
152.         mask[bin] = FFMAX(ff_ac3_hearing_threshold_tab[bin >> s->sr_shift][s->sr_code], excite[bin]);
                         ^
153.     }
154. 
