Lotsa runtime fixes

code/modules/modular_computers/hardware/battery_module.dm

@@ -12,6 +12,10 @@
 		battery = new battery_type(src)
 	..()
 
+/obj/item/computer_hardware/battery/Destroy()
+	. = ..()
+	QDEL_NULL(battery)
+
 /obj/item/computer_hardware/battery/try_insert(obj/item/I, mob/living/user = null)
 	if(!holder)
 		return FALSE
@@ -50,7 +54,6 @@
 				holder.shutdown_computer()
 
 		return TRUE
-	return FALSE
 
 
 
@@ -91,4 +94,4 @@
 	name = "nano battery"
 	desc = "A tiny power cell, commonly seen in low-end portable microcomputers."
 	icon_state = "cell_micro"
-	maxcharge = 300
+	maxcharge = 300

code/modules/surgery/organs/organ_internal.dm

@@ -25,6 +25,7 @@
 	var/now_fixed
 	var/high_threshold_cleared
 	var/low_threshold_cleared
+	rad_flags = RAD_NO_CONTAMINATE
 
 /obj/item/organ/proc/Insert(mob/living/carbon/M, special = 0, drop_if_replaced = TRUE)
 	if(!iscarbon(M) || owner == M)
@@ -134,7 +135,8 @@
 	///Damage decrements by a percent of its maxhealth
 	var/healing_amount = -(maxHealth * healing_factor)
 	///Damage decrements again by a percent of its maxhealth, up to a total of 4 extra times depending on the owner's health
-	healing_amount -= owner.satiety > 0 ? 4 * healing_factor * owner.satiety / MAX_SATIETY : 0
+	if(owner)
+		healing_amount -= owner.satiety > 0 ? 4 * healing_factor * owner.satiety / MAX_SATIETY : 0
 	applyOrganDamage(healing_amount) //to FERMI_TWEAK
 	//Make it so each threshold is stuck.