wxwidgets 3.2: use wxTreeItemId::GetItemParent()

LLVM 16 fails to compile this, GetParent()
seem to refer to wxWindow *GetParent() which has no args.

Author: saper

TAO/utils/wxNamingViewer/wxNamingTree.cpp

@@ -311,7 +311,7 @@ void WxNamingTree::onContextPopupDestroy( wxCommandEvent&)
     return;
   }
   wxTreeItemId item = GetSelection();
-  wxTreeItemId parentItem = GetParent( item);
+  wxTreeItemId parentItem = GetItemParent( item);
   if (parentItem == 0) {
     return;
   }
@@ -350,7 +350,7 @@ void WxNamingTree::onContextPopupUnbind( wxCommandEvent&)
     return;
   }
   wxTreeItemId item = GetSelection();
-  wxTreeItemId parentItem = GetParent( item);
+  wxTreeItemId parentItem = GetItemParent( item);
   if (parentItem == 0) {
     return;
   }
@@ -404,7 +404,7 @@ void WxNamingTree::onObjectPopupUnbind( wxCommandEvent& )
   wxTreeItemId item = GetSelection();
 
   // Make sure we don't unbind "Root"
-  wxTreeItemId parentItem = GetParent( item);
+  wxTreeItemId parentItem = GetItemParent( item);
   if (parentItem == 0) {
     return;
   }