tools: do not modify model from within gtk_tree_selection_selected_foreach()
tools: do not modify model from within gtk_tree_selection_selected_foreach()

dbartolini/crown,galek/crown,mikymod/crown,mikymod/crown,mikymod/crown,dbartolini/crown,dbartolini/crown,mikymod/crown,galek/crown,galek/crown,galek/crown,dbartolini/crown