Fixes medical item runtime and a line git ate

That line was pretty important, git. Why, git.

code/game/gamemodes/nuclear/pinpointer.dm

@@ -366,6 +366,7 @@
 		for(var/mob/living/carbon/M in mob_list)
 			if(M.mind in ticker.mode.syndicates)
 				nearest_op = M
+	if(!nearest_op) // There are simply no operatives left to point to
 		active = 0
 		icon_state = "pinoff"
 

code/game/objects/items/stacks/medical.dm

@@ -28,7 +28,7 @@
 			if(!M.can_inject(user, 1))
 				return 1
 
-		if(affecting.status & ORGAN_ROBOT)
+		if(affecting && (affecting.status & ORGAN_ROBOT))
 			user << "<span class='danger'>This can't be used on a robotic limb.</span>"
 			return 1