Fix an exploit allowing druids to gain substantial stat increases.

Fixes issue #3316

--HG--
branch : trunk

src/server/game/Entities/Player/Player.cpp

@@ -7218,7 +7218,7 @@ void Player::_ApplyItemMods(Item *item, uint8 slot,bool apply)
         return;
 
     // don't apply/remove mods if the weapon is disarmed
-    if (item->GetSlot() == EQUIPMENT_SLOT_MAINHAND && !IsUseEquipedWeapon(true))
+    if (item->GetSlot() == EQUIPMENT_SLOT_MAINHAND && HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_DISARMED))
         return;
 
     if (proto->Socket[0].Color)                              //only (un)equipping of items with sockets can influence metagems, so no need to waste time with normal items