766e9034e2
While it should be impossible to destroy a FolderIcon while a DnD action is still going on, there might still be rare cases where this happens (ie. when a folder is removed because an app got deleted during DnD). So make sure we're on the safe side here and don't potentially leave dragMonitors around after the icon is destroyed by removing the dragMonitor inside the onDestroy handler of the FolderIcon, just like we do for AppIcons. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/849