Runtime fixes

- Supply shuttle should now work and not runtime
- Runtime fix for the Health HUD

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3396 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/clothing/glasses/hud.dm

@@ -52,6 +52,7 @@
 			for(var/datum/disease/D in patient.viruses)
 				if(!D.hidden[SCANNER])
 					foundVirus++
+			if(!C) continue
 			C.images += image(tempHud,patient,"hud[RoundHealth(patient.health)]")
 			if(patient.stat == 2)
 				C.images += image(tempHud,patient,"huddead")