wrong row-activated callback signature

Change-Id: Ic757051aba2b71b0c0a785dc06f87d12c736862a
Reviewed-on: https://gerrit.libreoffice.org/50848Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/unx/gtk3/gtk3gtkinst.cxx

@@ -1952,7 +1952,7 @@ private:
         pThis->signal_changed();
     }
 
-    static void signalRowActivated(GtkTreeView*, gpointer widget)
+    static void signalRowActivated(GtkTreeView*, GtkTreePath*, GtkTreeViewColumn*, gpointer widget)
     {
         GtkInstanceTreeView* pThis = static_cast<GtkInstanceTreeView*>(widget);
         pThis->signal_row_activated();