Merge pull request #1852 from Aranclanos/HurrayMoreShitToMovementCode

Adding bullshit to movement code.

code/modules/mob/living/living.dm

@@ -385,7 +385,8 @@
 											var/mob/living/carbon/DNA_helper = pulling
 											H.blood_DNA[DNA_helper.dna.unique_enzymes] = DNA_helper.dna.blood_type
 						step(pulling, get_dir(pulling.loc, T))
-						M.start_pulling(t)
+						if(M)
+							M.start_pulling(t)
 				else
 					if (pulling)
 						if (istype(pulling, /obj/structure/window))

code/modules/mob/mob_movement.dm

@@ -438,7 +438,8 @@
 		var/atom/movable/t = M.pulling
 		M.stop_pulling()
 		step(pulling, get_dir(pulling.loc, A))
-		M.start_pulling(t)
+		if(M)
+			M.start_pulling(t)
 	else
 		step(pulling, get_dir(pulling.loc, A))
 	return