Fixes issue 420

Fixes issue 417

- Ghosts no longer block AI spawning
- Grilles no longer shock you if you're in an exosuit

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3279 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/power/power.dm

@@ -437,6 +437,8 @@
 //source is an object caused electrocuting (airlock, grille, etc)
 //No animations will be performed by this proc.
 /proc/electrocute_mob(mob/living/carbon/M as mob, var/power_source, var/obj/source, var/siemens_coeff = 1.0)
+	if(istype(M.loc,/obj/mecha))
+		return 0
 	if(istype(M,/mob/living/carbon/human))
 		var/mob/living/carbon/human/H = M
 		if(H.gloves)