fix prevent belt flare being filled by dump in action leaving no space for flare gun.

code/game/objects/items/storage/belt.dm

@@ -16,6 +16,20 @@
 	///TRUE Means that it closes a flap over its contents, and therefore update_icon should lift that flap when opened. If it doesn't have _half and _full iconstates, this doesn't matter either way.
 	var/flap = TRUE
 
+/obj/item/storage/belt/gun/flaregun/dump_into(obj/item/storage/Main, mob/user)
+
+	if(length(holstered_guns) < 1 && length(contents) >= (storage_slots-1))
+
+		to_chat(user, SPAN_WARNING("[src] is full."))
+		return FALSE
+	return ..()
+
+/obj/item/storage/belt/gun/flaregun/handle_item_insertion(obj/item/Warn, prevent_warning = 0, mob/user)
+
+	if(Warn.type == /obj/item/device/flashlight/flare && length(holstered_guns) < 1 && contents.len >= (storage_slots-1))
+		return FALSE
+	return ..()
+
 /obj/item/storage/belt/equipped(mob/user, slot)
 	switch(slot)
 		if(WEAR_WAIST, WEAR_J_STORE, WEAR_BACK)
@@ -900,6 +914,7 @@
 	for(var/slot in holster_slots)
 		if(AM == holster_slots[slot]["gun"])
 			holster_slots[slot]["gun"] = null
+
 			update_gun_icon(slot)
 			return
 

code/game/objects/items/storage/storage.dm

@@ -31,7 +31,6 @@
 	var/storage_flags = STORAGE_FLAGS_DEFAULT
 	var/has_gamemode_skin = FALSE ///Whether to use map-variant skins.
 
-
 /obj/item/storage/MouseDrop(obj/over_object as obj)
 	if(CAN_PICKUP(usr, src))
 		if(over_object == usr) // this must come before the screen objects only block
@@ -455,16 +454,16 @@ That's done by can_be_inserted(). Its checks are whether the item exists, is an
 The stop_warning parameter will stop the insertion message from being displayed. It is intended for cases where you are inserting multiple
 items at once, such as when picking up all the items on a tile with one click.
 user can be null, it refers to the potential mob doing the insertion.**/
-/obj/item/storage/proc/handle_item_insertion(obj/item/W, prevent_warning = 0, mob/user)
-	if(!istype(W))
+/obj/item/storage/proc/handle_item_insertion(obj/item/Warn, prevent_warning = 0, mob/user)
+	if(!istype(Warn))
 		return FALSE
-	if(user && W.loc == user)
-		if(!user.drop_inv_item_to_loc(W, src))
+	if(user && Warn.loc == user)
+		if(!user.drop_inv_item_to_loc(Warn, src))
 			return FALSE
 	else
-		W.forceMove(src)
+		Warn.forceMove(src)
 
-	_item_insertion(W, prevent_warning, user)
+	_item_insertion(Warn, prevent_warning, user)
 	return TRUE
 
 /**Inserts the item. Separate proc because handle_item_insertion isn't guaranteed to insert
@@ -721,24 +720,25 @@ W is always an item. stop_warning prevents messaging. user may be null.**/
 			to_chat(user, SPAN_WARNING("[ammo_dumping] is empty."))
 	return TRUE
 
-/obj/item/storage/proc/dump_into(obj/item/storage/M, mob/user)
+/obj/item/storage/proc/dump_into(obj/item/storage/Main, mob/user)
+
 	if(user.action_busy)
 		return
 
-	if(!M.contents.len)
-		to_chat(user, SPAN_WARNING("[M] is empty."))
+	if(!Main.contents.len)
+		to_chat(user, SPAN_WARNING("[Main] is empty."))
 		return
-	if(!has_room(M.contents[1])) //Does it have room for the first item to be inserted?
+	if(!has_room(Main.contents[1])) //Does it have room for the first item to be inserted?
 		to_chat(user, SPAN_WARNING("[src] is full."))
 		return
 
-	to_chat(user, SPAN_NOTICE("You start refilling [src] with [M]."))
+	to_chat(user, SPAN_NOTICE("You start refilling [src] with [Main]."))
 	if(!do_after(user, 1.5 SECONDS, INTERRUPT_ALL, BUSY_ICON_GENERIC))
 		return
-	for(var/obj/item/I in M)
+	for(var/obj/item/I in Main)
 		if(!has_room(I))
 			break
-		M.remove_from_storage(I)
+		Main.remove_from_storage(I)
 		handle_item_insertion(I, TRUE, user) //quiet insertion
 
 	playsound(user.loc, "rustle", 15, TRUE, 6)