Fixed bug related to clean up of text fonts.

src/osgWrappers/osgProducer/Viewer.cpp

@@ -125,6 +125,7 @@ BEGIN_OBJECT_REFLECTOR(osgProducer::Viewer)
 	I_Method0(osg::Quat, getOrientation);
 	I_Method1(void, getUsage, IN, osg::ApplicationUsage &, usage);
 	I_Method0(void, updatedSceneData);
+	I_Method0(void, cleanup_frame);
 	I_StaticMethod0(const char *, getDefaultImageFileName);
 	I_Property(osg::AnimationPath *, AnimationPath);
 	I_ReadOnlyProperty(osg::NodePath, CoordinateSystemNodePath);