Misc fixes

Source/Game/Combat/ThreatManager.cs

@@ -465,7 +465,7 @@ namespace Game.Combat
                 oldVictimRef = null;
 
             // in 99% of cases - we won't need to actually look at anything beyond the first element
-            ThreatReference highest = _sortedThreatList.Max();
+            ThreatReference highest = _sortedThreatList.First();
             // if the highest reference is offline, the entire list is offline, and we indicate this
             if (!highest.IsAvailable())
                 return null;

Source/Game/Entities/Unit/Unit.Spells.cs

@@ -3393,11 +3393,11 @@ namespace Game.Entities
             // we want to have all auras removed, so use your brain when linking events
             for (int counter = 0; !m_appliedAuras.Empty() || !m_ownedAuras.Empty(); counter++)
             {                
-                while (!m_appliedAuras.Empty())
+                foreach (var aurAppIter in GetAppliedAuras())
-                    _UnapplyAura(m_appliedAuras.First(), AuraRemoveMode.Default);
+                    _UnapplyAura(aurAppIter, AuraRemoveMode.Default);
 
-                while (!m_ownedAuras.Empty())
+                foreach (var aurIter in GetOwnedAuras())
-                    RemoveOwnedAura(m_ownedAuras.First());
+                    RemoveOwnedAura(aurIter);
 
                 const int maxIteration = 50;
                 // give this loop a few tries, if there are still auras then log as much information as possible
@@ -3608,6 +3608,10 @@ namespace Game.Entities
         // removes aura application from lists and unapplies effects
         public void _UnapplyAura(KeyValuePair<uint, AuraApplication> pair, AuraRemoveMode removeMode)
         {
+            //Check if aura was already removed, if so just return.
+            if (!m_appliedAuras.Remove(pair))
+                return;
+
             AuraApplication aurApp = pair.Value;
             Cypher.Assert(aurApp != null);
             Cypher.Assert(!aurApp.HasRemoveMode());
@@ -3624,8 +3628,6 @@ namespace Game.Entities
 
             Unit caster = aura.GetCaster();
 
-            m_appliedAuras.Remove(pair);
-
             if (aura.GetSpellInfo().HasAnyAuraInterruptFlag())
             {
                 m_interruptableAuras.Remove(aurApp);

Source/Game/Maps/MMapManager.cs

@@ -278,7 +278,7 @@ namespace Game
             if (mmap == null)
                 return null;
 
-            return mmap.navMeshQueries[instanceId];
+            return mmap.navMeshQueries.LookupByKey(instanceId);
         }
 
         public uint GetLoadedTilesCount() { return loadedTiles; }