Implemented function CheckPlayerCondition, it will be used before the player enters in vehicles. Now vehicles Argent Warhorse and Argent Battleworg can't be used if the player dosen't have Argent Lance eqquiped.

--HG--
branch : trunk

src/game/SpellHandler.cpp

@@ -556,7 +556,10 @@ void WorldSession::HandleSpellClick( WorldPacket & recv_data )
     }
 
     if(unit->IsVehicle())
-        _player->EnterVehicle(unit);
+    {
+        if (unit->CheckPlayerCondition(_player))
+            _player->EnterVehicle(unit);
+    }
 
     unit->AI()->DoAction(EVENT_SPELLCLICK);
 }