fix cppcoreguidelines-*

* cppcoreguidelines-init-variables
* cppcoreguidelines-c-copy-assignment-signature
* cppcoreguidelines-macro-usage
* cppcoreguidelines-non-private-member-variables-in-classes
* cppcoreguidelines-pro-type-member-init
* cppcoreguidelines-slicing
* cppcoreguidelines-special-member-functions
* cppcoreguidelines-virtual-class-destructor

src/Base/GeometryPyCXX.h

@@ -236,7 +236,8 @@ public:
     }
     GeometryT& operator=(const Object& rhs)
     {
-        return (*this = *rhs);
+        *this = *rhs;
+        return *this;
     }
     GeometryT& operator=(PyObject* rhsp)
     {