Fix keybinds to keymaps being ignored

core/core-keybinds.el

@@ -107,6 +107,7 @@ If any hook returns non-nil, all hooks after it are ignored.")
                          def))
                    (unquoted-fn (doom-unquote fn)))
               (when (or (not (symbolp unquoted-fn))
+                        (symbolp fn)
                         (fboundp unquoted-fn))
                 (push `(define-key doom-leader-map (general--kbd ,key)
                          ,fn)