gdiplus: Fix a possible NULL pointer reference in GdipGetNearestColor().

Fix a regression from 5ca9da2c. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48657Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com> Signed-off-by: Vincent Povirk <vincent@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

gdiplus: Fix a possible NULL pointer reference in GdipGetNearestColor().
83e95a60 · Zhiyi Zhang · Alexandre Julliard · 8adca327 · 83e95a60
Commit 83e95a60 authored Feb 24, 2020 by Zhiyi Zhang Committed by Alexandre Julliard Feb 24, 2020
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graphics.c dlls/gdiplus/graphics.c +1 -1

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--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -4783,7 +4783,7 @@ GpStatus WINGDIPAPI GdipGetNearestColor(GpGraphics *graphics, ARGB* argb)
    if(graphics->busy)
        return ObjectBusy;
-    if (graphics->image->type == ImageTypeBitmap)
+    if (graphics->image && graphics->image->type == ImageTypeBitmap)
    {
        static int once;
        GpBitmap *bitmap = (GpBitmap *)graphics->image;