[MIRROR] Properly checks flags with & instead of == [MDB IGNORE] (#16487)

* Properly checks flags with & instead of ==

* merge fixed for changeling

* skyrat equipment updated

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>
Co-authored-by: Tastyfish <crazychris32@gmail.com>

code/modules/mining/equipment/kheiral_cuffs.dm

@@ -35,11 +35,11 @@
 		. += span_notice("The cuff's GPS signal is on.")
 
 /obj/item/kheiral_cuffs/item_action_slot_check(slot)
-	return slot == ITEM_SLOT_GLOVES
+	return (slot & ITEM_SLOT_GLOVES)
 
 /obj/item/kheiral_cuffs/equipped(mob/user, slot, initial)
 	. = ..()
-	if(slot != ITEM_SLOT_GLOVES)
+	if(!(slot & ITEM_SLOT_GLOVES))
 		return
 	on_wrist = TRUE
 	playsound(loc, 'sound/weapons/handcuffs.ogg', 30, TRUE, SHORT_RANGE_SOUND_EXTRARANGE)

code/modules/mining/lavaland/tendril_loot.dm

@@ -131,7 +131,7 @@
 	var/mob/living/carbon/human/active_owner
 
 /obj/item/clothing/neck/necklace/memento_mori/item_action_slot_check(slot)
-	return slot == ITEM_SLOT_NECK
+	return (slot & ITEM_SLOT_NECK)
 
 /obj/item/clothing/neck/necklace/memento_mori/dropped(mob/user)
 	..()
@@ -568,7 +568,7 @@
 
 /obj/item/clothing/gloves/gauntlets/equipped(mob/user, slot)
 	. = ..()
-	if(slot == ITEM_SLOT_GLOVES)
+	if(slot & ITEM_SLOT_GLOVES)
 		tool_behaviour = TOOL_MINING
 		RegisterSignal(user, COMSIG_HUMAN_EARLY_UNARMED_ATTACK, .proc/rocksmash)
 		RegisterSignal(user, COMSIG_MOVABLE_BUMP, .proc/rocksmash)
@@ -729,7 +729,7 @@
 
 /obj/item/clothing/glasses/godeye/equipped(mob/living/user, slot)
 	. = ..()
-	if(ishuman(user) && slot == ITEM_SLOT_EYES)
+	if(ishuman(user) && (slot & ITEM_SLOT_EYES))
 		ADD_TRAIT(src, TRAIT_NODROP, EYE_OF_GOD_TRAIT)
 		pain(user)
 		scan_ability.Grant(user)