I don't like drycoding. It's coarse and rough and irritating and it gets everywhere.

src/server/game/AI/SmartScripts/SmartAI.cpp

@@ -467,7 +467,7 @@ bool SmartAI::CanAIAttack(const Unit* /*who*/) const
 bool SmartAI::AssistPlayerInCombat(Unit* who)
 {
     if (me->HasReactState(REACT_PASSIVE))
-        return;
+        return false;
 
     if (!who || !who->GetVictim())
         return false;