Fix clang warnings about variable usage

GameObjectMethods.h

@@ -289,7 +289,7 @@ namespace LuaGameObject
      *
      * The gameobject may be automatically respawned by the core
      */
-    int Despawn(lua_State* L, GameObject* go)
+    int Despawn(lua_State* /*L*/, GameObject* go)
     {
         go->SetLootState(GO_JUST_DEACTIVATED);
         return 0;
@@ -298,7 +298,7 @@ namespace LuaGameObject
     /**
      * Respawns a [GameObject]
      */
-    int Respawn(lua_State* L, GameObject* go)
+    int Respawn(lua_State* /*L*/, GameObject* go)
     {
         go->Respawn();
         return 0;

LuaFunctions.cpp

@@ -639,7 +639,6 @@ ElunaRegister<Player> PlayerMethods[] =
     { "GossipClearMenu", &LuaPlayer::GossipClearMenu },
 
     // Other
-    { "SendClearCooldowns", &LuaPlayer::SendClearCooldowns },
     { "SendBroadcastMessage", &LuaPlayer::SendBroadcastMessage },
     { "SendAreaTriggerMessage", &LuaPlayer::SendAreaTriggerMessage },
     { "SendNotification", &LuaPlayer::SendNotification },

MapMethods.h

@@ -305,7 +305,7 @@ namespace LuaMap
     /**
      * Saves the [Map]'s instance data to the database.
      */
-    int SaveInstanceData(lua_State* L, Map* map)
+    int SaveInstanceData(lua_State* /*L*/, Map* map)
     {
 #ifdef TRINITY
         ElunaInstanceAI* iAI = NULL;

PlayerMethods.h

@@ -3432,25 +3432,6 @@ namespace LuaPlayer
         return 0;
     }
 
-    /**
-     * Clears a cooldown of the specified spell
-     *
-     * @param uint32 spellId : entry of a spell
-     * @param [Unit] target
-     */
-    int SendClearCooldowns(lua_State* L, Player* player)
-    {
-        uint32 spellId = Eluna::CHECKVAL<uint32>(L, 2);
-        Unit* target = Eluna::CHECKOBJ<Unit>(L, 3);
-        
-#ifdef TRINITY
-        target->GetSpellHistory()->ResetCooldown(spellId, true);
-#else
-        player->SendClearCooldown(spellId, target);
-#endif
-        return 0;
-    }
-
     /**
      * Sends a Broadcast Message to the [Player]
      *

ServerHooks.cpp

@@ -107,7 +107,7 @@ bool Eluna::OnAreaTrigger(Player* pPlayer, AreaTriggerEntry const* pTrigger)
 }
 
 // Weather
-void Eluna::OnChange(Weather* weather, uint32 zone, WeatherState state, float grade)
+void Eluna::OnChange(Weather* /*weather*/, uint32 zone, WeatherState state, float grade)
 {
     START_HOOK(WEATHER_EVENT_ON_CHANGE);
     Push(zone);

UnitMethods.h

@@ -2285,7 +2285,7 @@ namespace LuaUnit
      */
     int CastSpell(lua_State* L, Unit* unit)
     {
-        Unit* target = Eluna::CHECKOBJ<Unit>(L, 2, NULL);
+        Unit* target = Eluna::CHECKOBJ<Unit>(L, 2, false);
         uint32 spell = Eluna::CHECKVAL<uint32>(L, 3);
         bool triggered = Eluna::CHECKVAL<bool>(L, 4, false);
 #ifdef CMANGOS
@@ -2319,7 +2319,7 @@ namespace LuaUnit
      */
     int CastCustomSpell(lua_State* L, Unit* unit)
     {
-        Unit* target = Eluna::CHECKOBJ<Unit>(L, 2, NULL);
+        Unit* target = Eluna::CHECKOBJ<Unit>(L, 2, false);
         uint32 spell = Eluna::CHECKVAL<uint32>(L, 3);
         bool triggered = Eluna::CHECKVAL<bool>(L, 4, false);
         bool has_bp0 = !lua_isnoneornil(L, 5);

WorldObjectMethods.h

@@ -396,7 +396,7 @@ namespace LuaWorldObject
 
         float x, y, z;
         obj->GetPosition(x, y, z);
-        ElunaUtil::WorldObjectInRangeCheck checker(true, obj, range, type, entry, hostile);
+        ElunaUtil::WorldObjectInRangeCheck checker(true, obj, range, type, entry, hostile, dead);
 
         WorldObject* target = NULL;
 #ifndef TRINITY