libavcodec/alsdec.c:793: error: Uninitialized Value
  The value read from sx[_] was never initialized.

libavcodec/alsdec.c:793:13: 
791.             delta[sb] = 5 - s[sb] + k[sb];
792. 
793.             ff_bgmc_decode(bc, sb_len, current_res, delta[sb], sx[sb], &high,
                 ^
794.                            &low, &value, ctx->bgmc_lut, ctx->bgmc_lut_status);
795. 
