0031035: Coding - uninitialized class fields reported by Visual Studio Code Analysis

Added initialization of fields that had not initialization
Added default constructors to classes without constructors

src/HLRAlgo/HLRAlgo_PolyHidingData.hxx

@@ -38,6 +38,7 @@ public:
 
   struct PlaneT
   {
+    PlaneT() : D(0.0) {}
     gp_XYZ Normal;
     Standard_Real D;
   };