tdf#133412 replicate active entry to ComboBox replacement

Change-Id: Ifde87738710406fb9f28008fa96241d59c52f450
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/95818
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/vcl/unx/gtk3/gtk3gtkinst.cxx b/vcl/unx/gtk3/gtk3gtkinst.cxx
index 3b25934..41bd249 100644
--- a/vcl/unx/gtk3/gtk3gtkinst.cxx
+++ b/vcl/unx/gtk3/gtk3gtkinst.cxx
@@ -13748,6 +13748,7 @@ public:
        , m_nMRUCount(0)
        , m_nMaxMRUCount(0)
    {
        int nActive = gtk_combo_box_get_active(m_pComboBox);
        insertAsParent(GTK_WIDGET(m_pComboBox), GTK_WIDGET(getContainer()));
        gtk_widget_set_visible(GTK_WIDGET(m_pComboBox), false);
        gtk_widget_set_no_show_all(GTK_WIDGET(m_pComboBox), true);
@@ -13836,6 +13837,9 @@ public:

        g_list_free(cells);

        if (nActive != -1)
            tree_view_set_cursor(nActive);

        g_signal_connect(m_pMenuWindow, "grab-broken-event", G_CALLBACK(signalGrabBroken), this);
        g_signal_connect(m_pMenuWindow, "button-press-event", G_CALLBACK(signalButtonPress), this);
        g_signal_connect(m_pMenuWindow, "motion-notify-event", G_CALLBACK(signalMotion), this);