Memory leaks in 21.2 when using menubar

Andy, I think this is your area. Could you look at this? Popping up menu items on the menubar creates many memory leaks like this: * This memory was allocated from: malloc [rtlib.o] xmalloc [alloc.c:280] xstrdup [alloc.c:376] button_item_to_widget_value [gui-x.c:343] menu_item_descriptor_to_widget_value_1 [menubar-x.c:137] menu_item_descriptor_to_widget_value_1 [menubar-x.c:304] menu_item_descriptor_to_widget_value_1 [menubar-x.c:304] menu_item_descriptor_to_widget_value_1 [menubar-x.c:304] menu_item_descriptor_to_widget_value [menubar-x.c:352] compute_menubar_data [menubar-x.c:528] set_frame_menubar [menubar-x.c:571] x_initialize_frame_menubar [menubar-x.c:631] x_create_widgets [frame-x.c:1989] x_init_frame_1 [frame-x.c:2176] Fmake_frame [frame.c:389] Ffuncall [eval.c:3178] execute_optimized_program [bytecode.c:743] funcall_compiled_function [bytecode.c:519] Ffuncall [eval.c:3210] execute_optimized_program [bytecode.c:743] funcall_compiled_function [bytecode.c:519] Ffuncall [eval.c:3210] execute_optimized_program [bytecode.c:743] funcall_compiled_function [bytecode.c:519] Feval [eval.c:3034] condition_case_1 [eval.c:1630] top_level_1 [cmdloop.c:202] internal_catch [eval.c:1305] initial_command_loop [cmdloop.c:281] xemacs_21_2_b23_sparc_sun_solaris2_6 [emacs.c:1898] main [emacs.c:2323] _start [crt1.o]