Merge pull request #10971 from VOREStation/Arokha/4runtimefixes

4 random runtime fixes

code/modules/clothing/spacesuits/rig/rig.dm

@@ -335,7 +335,7 @@
 						if("helmet")
 							to_chat(M, "<span class='notice'>\The [piece] hisses [!seal_target ? "closed" : "open"].</span>")
 							M.update_inv_head()
-							if(helmet)
+							if(helmet?.light_system == STATIC_LIGHT)
 								helmet.update_light(wearer)
 
 					//sealed pieces become airtight, protecting against diseases

code/modules/food/food/snacks.dm

@@ -1014,7 +1014,9 @@
 
 /obj/item/weapon/reagent_containers/food/snacks/donkpocket/proc/cooltime()
 	if (src.warm)
-		spawn(4200)
+		spawn(420 SECONDS)
+			if(!src?.reagents)
+				return
 			src.warm = 0
 			for(var/reagent in heated_reagents)
 				src.reagents.del_reagent(reagent)

code/modules/reagents/holder/holder.dm

@@ -123,7 +123,7 @@
 				add_reagent_id = "[item]juice"
 			if(add_reagent_id) //If we did find it, add it to our list of reagents to add, and add the number to our total.
 				add_reagents[add_reagent_id] += data[item]
-			totalnum += data[item]
+				totalnum += data[item]
 
 		if(totalnum)
 			var/multconst = amount/totalnum //We're going to add these extra reagents so that they share the ratio described, but only add up to 1x the existing amount at the most

code/modules/vore/fluffstuff/custom_clothes_vr.dm

@@ -2319,7 +2319,7 @@ Departamental Swimsuits, for general use
 			item_state = "rgb"
 			overlay_state = "rgb"
 			to_chat(user, "The polychromic plates in your cloak activate, turning it white.")
-		has_suit.update_clothing_icon()
+		has_suit?.update_clothing_icon()
 
 /obj/item/clothing/accessory/poncho/roles/cloak/fluff/cloakglowing/verb/color_verb()
 	set name = "Swap color"