libavcodec/bmp.c:174: error: Uninitialized Value
  The value read from rgb[_] was never initialized.

libavcodec/bmp.c:174:16: 
172.                avctx->pix_fmt = AV_PIX_FMT_RGB444;
173.             else {
174.                av_log(avctx, AV_LOG_ERROR, "Unknown bitfields %0X %0X %0X\n", rgb[0], rgb[1], rgb[2]);
                    ^
175.                return AVERROR(EINVAL);
176.             }
