gdiplus: Add a stub for GdipSetImageAttributesToIdentity.

dlls/gdiplus/gdiplus.spec

@@ -530,7 +530,7 @@
 @ stdcall GdipSetImageAttributesOutputChannelColorProfile(ptr long long ptr)
 @ stdcall GdipSetImageAttributesRemapTable(ptr long long long ptr)
 @ stdcall GdipSetImageAttributesThreshold(ptr long long long)
-@ stub GdipSetImageAttributesToIdentity
+@ stdcall GdipSetImageAttributesToIdentity(ptr long)
 @ stdcall GdipSetImageAttributesWrapMode(ptr long long long)
 @ stdcall GdipSetImagePalette(ptr ptr)
 @ stub GdipSetInfinite

dlls/gdiplus/imageattributes.c

@@ -169,3 +169,14 @@ GpStatus WINGDIPAPI GdipSetImageAttributesThreshold(GpImageAttributes *imageAttr
 
     return NotImplemented;
 }
+
+GpStatus WINGDIPAPI GdipSetImageAttributesToIdentity(GpImageAttributes *imageAttr,
+    ColorAdjustType type)
+{
+    static int calls;
+
+    if(!(calls++))
+        FIXME("not implemented\n");
+
+    return NotImplemented;
+}