avcodec/huffyuvdec: use RGB0 for 24bit rgb output instead of BGRA

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/huffyuvdec.c

@@ -361,14 +361,17 @@ static av_cold int decode_init(AVCodecContext *avctx)
             s->yuv = 1;
             break;
         case 24:
-        case 32:
             if (s->bgr32) {
-                avctx->pix_fmt = AV_PIX_FMT_RGB32;
-                s->alpha = 1;
+                avctx->pix_fmt = AV_PIX_FMT_0RGB32;
             } else {
                 avctx->pix_fmt = AV_PIX_FMT_BGR24;
             }
             break;
+        case 32:
+            av_assert0(s->bgr32);
+            avctx->pix_fmt = AV_PIX_FMT_RGB32;
+            s->alpha = 1;
+            break;
         default:
             return AVERROR_INVALIDDATA;
         }