avoid crash with GTK3 when deleting an item, closes #15786

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75639 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/dataview.cpp

@@ -1638,11 +1638,11 @@ bool wxGtkDataViewModelNotifier::ItemDeleted( const wxDataViewItem &parent, cons
     gtk_tree_path_append_index( path, index );
 #endif
 
+    m_internal->ItemDeleted( parent, item );
+
     gtk_tree_model_row_deleted(
         GTK_TREE_MODEL(wxgtk_model), path );
 
-    m_internal->ItemDeleted( parent, item );
-
     // Did we remove the last child, causing 'parent' to become a leaf?
     if ( !m_wx_model->IsContainer(parent) )
     {