A few more runtime fixes.

code/modules/surgery/organs/augments_chest.dm

@@ -84,6 +84,8 @@
 	to_chat(owner, "<span class='notice'>You feel a faint buzzing as your reviver implant starts patching your wounds...</span>")
 
 /obj/item/organ/cyberimp/chest/reviver/proc/heal()
+	if(!owner)
+		return
 	if(owner.getOxyLoss())
 		owner.adjustOxyLoss(-5)
 		revive_cost += 0.5 SECONDS

code/modules/surgery/organs/liver.dm

@@ -60,9 +60,10 @@
 //Just in case
 /obj/item/organ/liver/Remove(mob/living/carbon/M, special = 0)
 	..()
-	M.remove_movespeed_modifier(LIVER_SWELLING_MOVE_MODIFY)
-	M.ResetBloodVol() //At the moment, this shouldn't allow application twice. You either have this OR a thirsty ferret.
-	sizeMoveMod(1, M)
+	if(!QDELETED(M))
+		M.remove_movespeed_modifier(LIVER_SWELLING_MOVE_MODIFY)
+		M.ResetBloodVol() //At the moment, this shouldn't allow application twice. You either have this OR a thirsty ferret.
+		sizeMoveMod(1, M)
 
 //Applies some of the effects to the patient.
 /obj/item/organ/liver/proc/pharmacokinesis()