bugfix: SS AI behavior now Inits correctly (#6660)

Author: BeebBeebBoob

code/controllers/subsystem/processing/ai_controllers.dm

@@ -12,7 +12,7 @@ PROCESSING_SUBSYSTEM_DEF(ai_controllers)
 
 /datum/controller/subsystem/processing/ai_controllers/Initialize(timeofday)
 	SetupAIBehaviors()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/processing/ai_controllers/proc/SetupAIBehaviors()
 	ai_behaviors = list()