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/BRepExtrema/BRepExtrema_DistShapeShape.cxx

@@ -80,7 +80,12 @@ namespace
     Standard_Real    Distance; //!< Distance between sub-shapes
 
     //! Uninitialized constructor for collection.
-    BRepExtrema_CheckPair() {}
+    BRepExtrema_CheckPair()
+    : Index1(0),
+      Index2(0),
+      Distance(0.0)
+    {
+    }
 
     //! Creates new pair of sub-shapes.
     BRepExtrema_CheckPair (Standard_Integer theIndex1,