Fixed Coverity reported issues.

CID 11389: Resource leak in object (CTOR_DTOR_LEAK)
Allocating memory by calling "new bsp::VBSPData".
Assigning: "this->bsp_data" = "new bsp::VBSPData".
The constructor allocates field "bsp_data" of "struct bsp::VBSPReader" but the destructor and whatever functions it calls do not free it.

src/osgPlugins/bsp/VBSPData.h

@@ -162,7 +162,7 @@ struct DisplacedVertex
 };
 
 
-class VBSPData
+class VBSPData : public osg::Referenced
 {
 protected:
 
@@ -211,10 +211,11 @@ protected:
     typedef std::vector< osg::ref_ptr<osg::StateSet> >  StateSetList;
     StateSetList                                        state_set_list;
    
+    virtual ~VBSPData();
+
 public:
 
     VBSPData();
-    virtual ~VBSPData();
 
     void                      addEntity(std::string & newEntity);
     const int                 getNumEntities() const;

src/osgPlugins/bsp/VBSPReader.cpp

@@ -1055,7 +1055,7 @@ void VBSPReader::createScene()
     {
         // Get the entity
         entityText = bsp_data->getEntity(i);
-        currentEntity = new VBSPEntity(entityText, bsp_data);
+        currentEntity = new VBSPEntity(entityText, bsp_data.get());
 
         // See if the entity is visible
         if (currentEntity->isVisible())

src/osgPlugins/bsp/VBSPReader.h

@@ -233,7 +233,7 @@ protected:
 
     std::string                map_name;
 
-    VBSPData *                 bsp_data;
+    osg::ref_ptr<VBSPData>     bsp_data;
 
     osg::ref_ptr<osg::Node>    root_node;