libavcodec/alsdec.c:673: error: Uninitialized Value
  The value read from ltp_gain[_] was never initialized.

libavcodec/alsdec.c:673:17: 
671. 
672.             for (base = begin; base < end; base++, tab++)
673.                 y += MUL64(ltp_gain[tab], raw_samples[base]);
                     ^
674. 
675.             raw_samples[ltp_smp] += y >> 7;
