SCI: fixing iceman undithering door close-up

room 9 (go up right at the start)

svn-id: r53522

1 files changed, 3 insertions, 2 deletions

diff --git a/engines/sci/graphics/view.cpp b/engines/sci/graphics/view.cpp
index 773822854b..20ebb9b937 100644
--- a/engines/sci/graphics/view.cpp
+++ b/engines/sci/graphics/view.cpp
@@ -595,9 +595,10 @@ void GfxView::unditherBitmap(byte *bitmapPtr, int16 width, int16 height, byte cl
 			if (unditherTable[color]) {
 				// Some color with black? Turn colors around, otherwise it won't
 				// be the right color at all.
+				byte unditheredColor = color;
 				if ((color & 0xF0) == 0)
-					color = (color << 4) | (color >> 4);
-				curPtr[0] = color; curPtr[1] = color;
+					unditheredColor = (color << 4) | (color >> 4);
+				curPtr[0] = unditheredColor; curPtr[1] = unditheredColor;
 			}
 			curPtr++;
 		}