Unset Lock key masks when closing menu

This addresses an issue that occurs when trying to close the menu using the configured shortcut without modifiers, but Lock keys (NumLock, etc) are enabled.

Fixes solus-project#70

src/frontend/menu-keyboard.c

@@ -23,12 +23,17 @@ gboolean brisk_menu_window_key_press(BriskMenuWindow *self, GdkEvent *event,
                                      __brisk_unused__ gpointer v)
 {
         autofree(gchar) *accel_name = NULL;
+        GdkModifierType lock_maks = GDK_MOD2_MASK | GDK_LOCK_MASK | GDK_MOD5_MASK;
+        guint mods;
 
         if (!self->shortcut) {
                 return GDK_EVENT_PROPAGATE;
         }
 
-        accel_name = gtk_accelerator_name(event->key.keyval, event->key.state);
+        /* Unset mask of the lock keys */
+        mods = event->key.state & ~(lock_maks);
+
+        accel_name = gtk_accelerator_name(event->key.keyval, mods);
         if (!accel_name || g_ascii_strcasecmp(self->shortcut, accel_name) != 0) {
                 return GDK_EVENT_PROPAGATE;
         }