Initialize some fields before usage.

src/OBJECT/SMESH_DeviceActor.cxx

@@ -83,8 +83,10 @@ SMESH_DeviceActor
 {
   if(MYDEBUG) MESSAGE("SMESH_DeviceActor - "<<this);
 
-  myIsShrunk = false;
   myIsShrinkable = false;
+  myIsShrunk = false;
+  myIsHighlited = false;
+
   myRepresentation = eSurface;
 
   myProperty = vtkProperty::New();

src/SMESH/SMESH_Octree.cxx

@@ -35,6 +35,7 @@
  */
 //===========================================================================
 SMESH_Octree::SMESH_Octree (const int maxLevel, const double minBoxSize):
+    myChildren(NULL),
     myFather(NULL),
     myLevel(0),
     myMaxLevel(maxLevel),