Various fixes to constructors to ensure that all variables are initialized.

src/osgUtil/CullVisitor.cpp

@@ -82,7 +82,6 @@ CullVisitor::CullVisitor()
     //_tsm = LOOK_VECTOR_DISTANCE;
     _tsm = OBJECT_EYE_POINT_DISTANCE;
 
-
     _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
     _computed_znear = FLT_MAX;
     _computed_zfar = -FLT_MAX;
@@ -93,6 +92,11 @@ CullVisitor::CullVisitor()
     _numFramesToKeepImpostorSprites = 10;
     _impostorSpriteManager = osgNew ImpostorSpriteManager;
 
+    _currentRenderGraph = NULL;
+    _currentRenderBin = NULL;
+	
+    _currentReuseRenderLeafIndex=0;
+
 }