Fix region leak in gtk2 compat defines
Fix region leak in gtk2 compat defines

https://bugs.freedesktop.org/show_bug.cgi?id=54277

Fantu/spice-gtk,Fantu/spice-gtk,elmarco/spice-gtk,guodong/spice-gtk,SPICE/spice-gtk,guodong/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,fgouget/spice-gtk,flexVDI/spice-gtk,elmarco/spice-gtk,Fantu/spice-gtk,mathslinux/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,elmarco/spice-gtk,fgouget/spice-gtk,SPICE/spice-gtk,SPICE/spice-gtk,guodong/spice-gtk,elmarco/spice-gtk,Fantu/spice-gtk,flexVDI/spice-gtk,mathslinux/spice-gtk,guodong/spice-gtk,mathslinux/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,SPICE/spice-gtk,fgouget/spice-gtk,mathslinux/spice-gtk