[Client] Fix warnings related to declarations

apps/openmw/mwmp/PlayerList.hpp

@@ -9,6 +9,8 @@
 
 #include "../mwworld/manualref.hpp"
 
+#include "DedicatedPlayer.hpp"
+
 #include <map>
 #include <RakNetTypes.h>
 
@@ -19,8 +21,6 @@ namespace MWMechanics
 
 namespace mwmp
 {
-    struct DedicatedPlayer;
-
     class PlayerList
     {
     public:

apps/openmw/mwmp/processors/worldstate/ProcessorCellReset.hpp

@@ -19,7 +19,6 @@ namespace mwmp
             LOG_MESSAGE_SIMPLE(TimedLog::LOG_INFO, "Received ID_CELL_RESET");
 
             CellController* cellController = Main::get().getCellController();
-            MWBase::World * world = MWBase::Environment::get().getWorld();
 
             mwmp::Main::get().getNetworking()->getWorldstate()->resetCells(&worldstate.cellsToReset);
         }

apps/openmw/mwscript/containerextensions.cpp

@@ -135,8 +135,6 @@ namespace MWScript
                         return;
                     }
 
-                    MWWorld::ContainerStore& store = ptr.getClass().getContainerStore(ptr);
-
                     /*
                         Start of tes3mp change (major)