libavcodec/ac3.c:150: error: Uninitialized Value
  The value read from excite[_] was never initialized.

libavcodec/ac3.c:150:13: 
148.         tmp = s->db_per_bit - band_psd[bin];
149.         if (tmp > 0) {
150.             excite[bin] += tmp >> 2;
                 ^
151.         }
152.         mask[bin] = FFMAX(ff_ac3_hearing_threshold_tab[bin >> s->sr_shift][s->sr_code], excite[bin]);
