Scripts/ScarletEnclave: Fix uninitialized values in Highlord Darion Mograine

Reset() has if checks on values that are initialized after them so it's required to initialize these fields in the constructor.

Valgrind log:
 Conditional jump or move depends on uninitialised value(s)
  by 0x11CF472: HashMapHolder<Creature>::Find(unsigned long) (ObjectAccessor.h:67)
  by 0x11CE36F: Creature* ObjectAccessor::GetObjectInWorld<Creature>(unsigned long, Creature*) (ObjectAccessor.h:114)
  by 0x1257C13: Creature* ObjectAccessor::GetObjectInMap<Creature>(unsigned long, Map*, Creature*) (ObjectAccessor.h:135)
  by 0x12E64F1: Map::GetCreature(unsigned long) (Map.cpp:2767)
  by 0x10AF4DE: Unit::GetCreature(WorldObject&, unsigned long) (Unit.cpp:13021)
  by 0x16F8F81: npc_highlord_darion_mograine::npc_highlord_darion_mograineAI::Reset() (chapter5.cpp:386)
  by 0x16F8D36: npc_highlord_darion_mograine::npc_highlord_darion_mograineAI::npc_highlord_darion_mograineAI(Creature*) (chapter5.cpp:314)
  by 0x16F8CD6: npc_highlord_darion_mograine::GetAI(Creature*) const (chapter5.cpp:307)
  by 0x132AF6C: ScriptMgr::GetCreatureAI(Creature*) (ScriptMgr.cpp:796)
  by 0x1441D45: FactorySelector::selectAI(Creature*) (CreatureAISelector.cpp:41)

1 files changed, 17 insertions, 0 deletions

diff --git a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
index 382a0002065..ab1367ed684 100644
--- a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
+++ b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
@@ -311,6 +311,23 @@ public:
     {
         npc_highlord_darion_mograineAI(Creature* creature) : npc_escortAI(creature)
         {
+            uiTirionGUID = 0;
+            uiKorfaxGUID = 0;
+            uiMaxwellGUID = 0;
+            uiEligorGUID = 0;
+            uiRayneGUID = 0;
+            uiKoltiraGUID = 0;
+            uiOrbazGUID = 0;
+            uiThassarianGUID = 0;
+            uiLichKingGUID = 0;
+
+            memset(uiDefenderGUID, 0, sizeof(uiDefenderGUID));
+            memset(uiEarthshatterGUID, 0, sizeof(uiEarthshatterGUID));
+            memset(uiAbominationGUID, 0, sizeof(uiAbominationGUID));
+            memset(uiBehemothGUID, 0, sizeof(uiBehemothGUID));
+            memset(uiGhoulGUID, 0, sizeof(uiGhoulGUID));
+            memset(uiWarriorGUID, 0, sizeof(uiWarriorGUID));
+
             Reset();
         }