Core/Scripts: Always run OnSpellClick AI hook, even if there are no spells defined for spellclick event.

src/server/scripts/Northrend/IcecrownCitadel/boss_valithria_dreamwalker.cpp

@@ -1013,8 +1013,11 @@ class npc_dream_portal : public CreatureScript
             {
             }
 
-            void OnSpellClick(Unit* /*clicker*/)
+            void OnSpellClick(Unit* /*clicker*/, bool& result)
             {
+                if (!result)
+                    return;
+
                 _used = true;
                 me->DespawnOrUnsummon();
             }

src/server/scripts/Northrend/Ulduar/Ulduar/boss_flame_leviathan.cpp

@@ -709,8 +709,11 @@ class boss_flame_leviathan_overload_device : public CreatureScript
             {
             }
 
-            void OnSpellClick(Unit* /*clicker*/)
+            void OnSpellClick(Unit* /*clicker*/, bool& result)
             {
+                if (!result)
+                    return;
+
                 if (me->GetVehicle())
                 {
                     me->RemoveFlag(UNIT_NPC_FLAGS, UNIT_NPC_FLAG_SPELLCLICK);

src/server/scripts/Northrend/Ulduar/Ulduar/boss_yogg_saron.cpp

@@ -1421,8 +1421,10 @@ class npc_descend_into_madness : public CreatureScript
         {
             npc_descend_into_madnessAI(Creature* creature) : PassiveAI(creature), _instance(creature->GetInstanceScript()) { }
 
-            void OnSpellClick(Unit* clicker)
+            void OnSpellClick(Unit* clicker, bool& result)
             {
+                if (!result)
+                    return;
                 clicker->RemoveAurasDueToSpell(SPELL_BRAIN_LINK);
                 me->DespawnOrUnsummon();
             }