Fix for internal organ surgery

Fixes internal organ surgery, and some other places where the same
problem would have cropped up

code/game/gamemodes/changeling/changeling_powers.dm

@@ -503,7 +503,7 @@
 				O.wounds = list()
 				O.wound_update_accuracy = 1
 			for(var/organ_name in H.internal_organs)
-				var/datum/organ/internal/IO = H.internal_organs[organ_name]
+				var/datum/organ/internal/IO = H.internal_organs_by_name[organ_name]
 				IO.damage = 0
 				IO.trace_chemicals = list()
 			H.updatehealth()

code/game/objects/items/devices/laserpointer.dm

@@ -112,7 +112,7 @@
 					severity -= 1
 				severity = min(max(severity, 0), 4)
 				var/mob/living/carbon/human/H = C
-				var/datum/organ/internal/eyes/E = H.internal_organs["eyes"]
+				var/datum/organ/internal/eyes/E = H.internal_organs_by_name["eyes"]
 
 				switch(severity)
 					if(0)