libavcodec/ac3.c:163: error: Uninitialized Value
  The value read from fastleak was never initialized.

libavcodec/ac3.c:163:24: 
161.             if (!(is_lfe && band == 6))
162.                 lowcomp = calc_lowcomp(lowcomp, band_psd[band], band_psd[band+1], band);
163.             fastleak = FFMAX(fastleak - s->fast_decay, band_psd[band] - fast_gain);
                            ^
164.             slowleak = FFMAX(slowleak - s->slow_decay, band_psd[band] - s->slow_gain);
165.             excite[band] = FFMAX(fastleak - lowcomp, slowleak);
