Clean up wxDataViewMainWindow::ItemDeleted() a bit.

Reuse shared code instead of duplicating it. No real changes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68582 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/datavgen.cpp

@@ -2006,17 +2006,11 @@ bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
         m_count = list_model->GetCount();
 
-        if( m_currentRow > GetRowCount() )
-            m_currentRow = m_count - 1;
-
         // TODO: why empty the entire selection?
         m_selection.Empty();
-
-        UpdateDisplay();
-
-        return true;
     }
-
+    else // general case
+    {
         wxDataViewTreeNode * node = FindNode(parent);
 
         // Notice that it is possible that the item being deleted is not in the
@@ -2066,6 +2060,7 @@ bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
         // Make the row number invalid and get a new valid one when user call GetRowCount
         m_count = -1;
         node->ChangeSubTreeCount(sub);
+    }
 
     // Change the current row to the last row if the current exceed the max row number
     if( m_currentRow > GetRowCount() )