libavcodec/bmp.c:173: error: Uninitialized Value
  The value read from rgb[_] was never initialized.

libavcodec/bmp.c:173:16: 
171.                avctx->pix_fmt = PIX_FMT_RGB444;
172.             else {
173.                av_log(avctx, AV_LOG_ERROR, "Unknown bitfields %0X %0X %0X\n", rgb[0], rgb[1], rgb[2]);
                    ^
174.                return AVERROR(EINVAL);
175.             }
