Fixes a few runtimes (#12893)

* Some runtime fixes

* fixes #12892

* Alternative fix. Better behaviour

* qdel atmos thingy when loc is null

* Eye colour init protection

* Whoops. Forgotten /

* Suggestions update

* Fixed a runtime where IPCs losing their arms would cause a runtime in the hand

* Fixes mobs being able to nuzzle a grill to dead and a runtime there

* Added extra logging to the NPCpools

code/controllers/subsystem/idlenpcpool.dm

@@ -29,6 +29,7 @@ SUBSYSTEM_DEF(idlenpcpool)
 		var/mob/living/simple_animal/SA = currentrun[currentrun.len]
 		--currentrun.len
 		if(!SA)
+			log_debug("idlenpcpool encountered an invalid entry, resumed: [resumed], SA [SA], type of SA [SA?.type], null [SA == null], qdelled [QDELETED(SA)], SA in AI_IDLE list: [SA in GLOB.simple_animals[AI_IDLE]]")
 			GLOB.simple_animals[AI_IDLE] -= SA
 			continue
 

code/controllers/subsystem/npcpool.dm

@@ -21,6 +21,10 @@ SUBSYSTEM_DEF(npcpool)
     while(currentrun.len)
         var/mob/living/simple_animal/SA = currentrun[currentrun.len]
         --currentrun.len
+        if(!SA)
+            log_debug("npcpool encountered an invalid entry, resumed: [resumed], SA [SA], type of SA [SA?.type], null [SA == null], qdelled [QDELETED(SA)], SA in AI_ON list: [SA in GLOB.simple_animals[AI_ON]]")
+            GLOB.simple_animals[AI_ON] -= SA
+            continue
 
         if(!SA.ckey && !SA.notransform)
             if(SA.stat != DEAD)