Fix Ptr updates in PositionCell

This was not the proper way to get the updated Ptr, it will only work for the player which isn't owned by any cell. For other objects, moving between cells makes the object owned by that cell and thus the getBase() pointer will change.

apps/openmw/mwscript/transformationextensions.cpp

@@ -312,8 +312,8 @@ namespace MWScript
                     }
                     if(store)
                     {
-                        MWBase::Environment::get().getWorld()->moveObject(ptr,store,x,y,z);
+                        ptr = MWBase::Environment::get().getWorld()->moveObject(ptr,store,x,y,z);
-                        ptr = MWWorld::Ptr(ptr.getBase(), store);
+
                         dynamic_cast<MWScript::InterpreterContext&>(runtime.getContext()).updatePtr(ptr);
 
                         float ax = osg::RadiansToDegrees(ptr.getRefData().getPosition().rot[0]);
@@ -363,8 +363,7 @@ namespace MWScript
                     if (ptr == MWMechanics::getPlayer())
                     {
                         MWWorld::CellStore* cell = MWBase::Environment::get().getWorld()->getExterior(cx,cy);
-                        MWBase::Environment::get().getWorld()->moveObject(ptr,cell,x,y,z);
+                        ptr = MWBase::Environment::get().getWorld()->moveObject(ptr,cell,x,y,z);
-                        ptr = MWWorld::Ptr(ptr.getBase(), cell);
                     }
                     else
                     {