[PATCH 3/4 v2] gdiplus: Add partial support for GdipDrawImagePointsRect on metafile

[Vincent Povirk]

+    draw_image_record->SrcRect.Width = units_to_pixels(srcwidth,
srcUnit, metafile->image.xres);;
+    draw_image_record->SrcRect.Height = units_to_pixels(srcheight,
srcUnit, metafile->image.yres);;

One semicolon is probably enough.

I think we should put a little more effort into object management up front.

I would start it by having the Add*Object functions return an id to
the caller, and adding a ReleaseObjects function to indicate that the
current objects are no longer needed. For now, we could just implement
this as a counter that we reset to 0.