Keyu Tao authored Apr 30, 2024 and Marge Bot committed May 07, 2024

Two new fields: ref_count and removed, are added to MetaKeyHandler, and
it would be freed only if the ref count has reached 0. When handler is
removed from key_handlers GHashTable, key_handler_destroy() would mark
removed as TRUE, and do an unref. handler->removed is checked in
get_keybinding, and binding with handler removed would not be used.

Also in MetaKeyBinding, it now has the ownership of the name field, to
avoid it being freed before logging. Create or copy a binding would
do a ref inc for handler, and free one would unref handler.

Fixes gnome-shell#1870.

Part-of: <!3711>