mob: fix for say code "randomly" breaking

There was a runtiming check for mob.locs[1] in living/say, that would
fail if a mob was in bluespace.

Signed-off-by: Mloc-Argent <colmohici@gmail.com>

code/modules/mob/living/say.dm

@@ -108,7 +108,7 @@ var/list/department_radio_keys = list(
 			if(M.stat == DEAD && client && (M.client.prefs.toggles & CHAT_GHOSTEARS))
 				listening |= M
 				continue
-			if(M.locs[1] in hearturfs)
+			if(M.loc && M.locs[1] in hearturfs)
 				listening |= M
 
 		for(var/obj/O in objects)