libavcodec/ac3.c:126: error: Uninitialized Value
  The value read from fastleak was never initialized.

libavcodec/ac3.c:126:24: 
124.                 lowcomp = calc_lowcomp(lowcomp, band_psd[bin], band_psd[bin+1], bin);
125. 
126.             fastleak = FFMAX(fastleak - s->fast_decay, band_psd[bin] - fast_gain);
                            ^
127.             slowleak = FFMAX(slowleak - s->slow_decay, band_psd[bin] - s->slow_gain);
128.             excite[bin] = FFMAX(fastleak - lowcomp, slowleak);
