fdo#53070 fix access violation

Through that different initialization pIUnknown
got random address. The consequence was that
if (pIUnknown)
    pIUnknown->Release();
ends with access viloation in
WpBase& WpBase::operator=(const WpBase& rhs)

Change-Id: I8b3c5de233d0868fea052c990cc83aed917117ae

connectivity/source/inc/ado/Aolewrap.hxx

@@ -94,9 +94,8 @@ namespace connectivity
             }
 
             WpOLEBase(const WpOLEBase<T>& aWrapper)
-                : WpBase(aWrapper)
-                , pInterface(aWrapper.pInterface)
             {
+                operator=(aWrapper);
             }
 
             virtual ~WpOLEBase()