Simplify and cleanup IPC/defib revival after messy fixes

code/game/objects/items/weapons/defib.dm

@@ -330,13 +330,10 @@
 							user.visible_message("<span class='boldnotice'>[defib] pings: Resuscitation successful.</span>")
 							playsound(get_turf(src), 'sound/machines/ping.ogg', 50, 0)
 							H.stat = 1
-							if(H in dead_mob_list)
-								dead_mob_list -= H
-								living_mob_list += H
+							H.revive()
 							H.emote("gasp")
 							if(tplus > tloss)
 								H.setBrainLoss( max(0, min(99, ((tlimit - tplus) / tlimit * 100))))
-							H.updatehealth()
 							defib.deductcharge(revivecost)
 							add_logs(user, M, "revived", object="defibrillator")
 						else

code/modules/mob/living/carbon/human/human_damage.dm

@@ -16,26 +16,20 @@
 	if (species.flags & IS_SYNTHETIC)
 		var/datum/organ/external/H = organs_by_name["head"]
 		if (!H.amputated)
-			if ((health >= (config.health_threshold_dead/100*75)) && stat == DEAD)  //need to get them 25% away from death point before reviving them
-				living_mob_list -= src
-				mob_list -= src
-				dead_mob_list -= src
-				living_mob_list += src
-				mob_list += src
-				stat = CONSCIOUS
-				ear_deaf = 0
-				tod = 0
-				timeofdeath = 0
+			if ((health >= (config.health_threshold_dead/100*75)) && stat == DEAD)  //need to get them 25% away from death point before reviving synthetics
+				revive()
 	if (stat == CONSCIOUS && (src in dead_mob_list)) //Defib fix
-		living_mob_list -= src
-		mob_list -= src
-		dead_mob_list -= src
-		living_mob_list += src
-		mob_list += src
-		ear_deaf = 0
-		tod = 0
-		timeofdeath = 0
+		revive()
 	return
+	
+/mob/living/carbon/human/revive() // handles revival through other means that cloning (defib, IPC repair)
+	stat = CONSCIOUS
+	dead_mob_list -= src
+	living_mob_list |= src
+	mob_list |= src
+	ear_deaf = 0
+	tod = 0
+	timeofdeath = 0	
 
 /mob/living/carbon/human/getBrainLoss()
 	if(species && species.flags & NO_INTORGANS) return