TG: Disposal and welding helmet exploit fixes:

- You can no longer toggle the welding helmet when stunned or restrained.

- You can no longer give yourself all-access via-disposals. Living mobs and
living mobs inside of a container cancel their holder's destination. This still
allows people wrapped in lockers to be sent to their proper destination, however
it would require someone on the other end to open it. So it's their fault for
not dragging it out before opening it.
Revision: r3400
Author: 	 johnsonmt88

code/modules/recycling/disposal.dm

@@ -595,6 +595,7 @@
 	var/count = 1000	//*** can travel 1000 steps before going to the mail room (in case of loops)
 	var/destinationTag = null // changes if contains a delivery container
 	var/tomail = 0 //changes if contains wrapped package
+	var/hasmob = 0 //If it contains a mob
 
 
 	// initialize a holder from the contents of a disposal unit
@@ -602,6 +603,20 @@
 		if(!istype(D, /obj/machinery/disposal/toilet))//So it does not drain gas from a toilet which does not function on it.
 			gas = D.air_contents// transfer gas resv. into holder object
 
+		//Check for any living mobs trigger hasmob.
+		//hasmob effects whether the package goes to cargo or its tagged destination.
+		for(var/mob/living/M in D)
+			if(M && M.stat != 2)
+				hasmob = 1
+
+		//Checks 1 contents level deep. This means that players can be sent through disposals...
+		//...but it should require a second person to open the package. (i.e. person inside a wrapped locker)
+		for(var/obj/O in D)
+			if(O.contents)
+				for(var/mob/living/M in O.contents)
+					if(M && M.stat != 2)
+						hasmob = 1
+
 		// now everything inside the disposal gets put into the holder
 		// note AM since can contain mobs or objs
 		for(var/atom/movable/AM in D)
@@ -611,10 +626,10 @@
 				if(H.mutations & FAT)		// is a human and fat?
 					has_fat_guy = 1			// set flag on holder
 			*/
-			if(istype(AM, /obj/structure/bigDelivery))
+			if(istype(AM, /obj/structure/bigDelivery) && !hasmob)
 				var/obj/structure/bigDelivery/T = AM
 				src.destinationTag = T.sortTag
-			else if(istype(AM, /obj/item/smallDelivery))
+			if(istype(AM, /obj/item/smallDelivery) && !hasmob)
 				var/obj/item/smallDelivery/T = AM
 				src.destinationTag = T.sortTag
 			else if (!src.destinationTag)