Ensure gdk_quartz_drag_source freed on all paths.
New release function _gdk_quartz_drag_source_context_destroy_gtk_only gets called when drag fails to start or is cancelled as well as when it successfully completes.
Fixes #2881 (closed)
New release function _gdk_quartz_drag_source_context_destroy_gtk_only gets called when drag fails to start or is cancelled as well as when it successfully completes.
Fixes #2881 (closed)