Merge pull request #3473 from Citadel-Station-13/upstream-merge-31809

[MIRROR] Cleans up some istypes not using helpers

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -1330,7 +1330,7 @@
 	taste_description = "carpet" // Your tounge feels furry.
 
 /datum/reagent/carpet/reaction_turf(turf/T, reac_volume)
-	if(istype(T, /turf/open/floor/plating) || istype(T, /turf/open/floor/plasteel))
+	if(isplatingturf(T) || istype(T, /turf/open/floor/plasteel))
 		var/turf/open/floor/F = T
 		F.ChangeTurf(/turf/open/floor/carpet)
 	..()

code/modules/reagents/chemistry/reagents/pyrotechnic_reagents.dm

@@ -54,7 +54,7 @@
 	. = 1
 
 /datum/reagent/clf3/reaction_turf(turf/T, reac_volume)
-	if(istype(T, /turf/open/floor/plating))
+	if(isplatingturf(T))
 		var/turf/open/floor/plating/F = T
 		if(prob(10 + F.burnt + 5*F.broken)) //broken or burnt plating is more susceptible to being destroyed
 			F.ChangeTurf(F.baseturf)