Add stub implementation for SetMagicColors().

dlls/gdi/gdi32.spec

@@ -443,7 +443,7 @@
 @ stdcall SetICMProfileW(long wstr)
 @ stdcall SetLayout(long long)
 # @ stub SetLayoutWidth
-@ stub SetMagicColors
+@ stdcall SetMagicColors(ptr long long)
 @ stdcall SetMapMode(long long)
 @ stdcall SetMapperFlags(long long)
 @ stdcall SetMetaFileBitsEx(long ptr)

dlls/gdi/palette.c

@@ -908,6 +908,15 @@ VOID WINAPI SetMagicColors16(HDC16 hDC, COLORREF color, UINT16 index)
 
 }
 
+/*********************************************************************
+ *           SetMagicColors   (GDI.@)
+ */
+BOOL WINAPI SetMagicColors(HDC hdc, ULONG u1, ULONG u2)
+{
+    FIXME("(%p 0x%08lx 0x%08lx): stub\n", hdc, u1, u2);
+    return TRUE;
+}
+
 /**********************************************************************
  * GetICMProfileA [GDI32.@]
  *