Fix #3219: icon repetition after doom/reload
Fix #3219: icon repetition after doom/reload

Due to faulty member detection (`cl-pushnew` uses `eql` by default,
which can't compare compound data structures).

hlissner/.emacs.d,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/doom-emacs