When _gdk_windowing_create_cairo_surface() gets called, we should always create
a fully new cairo surface, instead of just referencing the available one, which
may already be finished (i.e. in CAIRO_STATUS_SURFACE_FINISHED state).
A new user_data key is added to the surface to explicitly release the acquired
DC when the surface is destroyed, independent to the user_data key added to
clear the impl->user_data pointer.
https://bugzilla.gnome.org/show_bug.cgi?id=695636
4ecbef0791