gdiplus: Implement GdipSetImagePalette.
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index df107e4..80ef463 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -1256,6 +1256,10 @@
 
     (*metafile)->image.type = ImageTypeMetafile;
     memcpy(&(*metafile)->image.format, &ImageFormatWMF, sizeof(GUID));
+    (*metafile)->image.palette_flags = 0;
+    (*metafile)->image.palette_count = 0;
+    (*metafile)->image.palette_size = 0;
+    (*metafile)->image.palette_entries = NULL;
     (*metafile)->bounds.X = ((REAL) placeable->BoundingBox.Left) / ((REAL) placeable->Inch);
     (*metafile)->bounds.Y = ((REAL) placeable->BoundingBox.Right) / ((REAL) placeable->Inch);
     (*metafile)->bounds.Width = ((REAL) (placeable->BoundingBox.Right