olvwm crash on amd64

Hi,

It seems like change to malloc also causes olvwm to crash on amd64
(7.0-CURRENT):

GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
(gdb) run
Starting program: /usr/ports/x11-wm/olvwm/work/olvwm

Program received signal SIGSEGV, Segmentation fault.
MakeOpenButton (dpy=0x802ffc550, scrInfo=0x802fef0e0) at images.c:739
739         *b = openButton;
(gdb) where
#0  MakeOpenButton (dpy=0x802ffc550, scrInfo=0x802fef0e0) at images.c:739
#1  0x000000000042ff18 in initMenuButtons (dpy=0x802ffc550,
     scrInfo=0x802fef0e0) at usermenu.c:2022
#2  0x0000000000430101 in InitMenus (dpy=0x802ffc550, scrInfo=0x802fef0e0)
     at usermenu.c:2061
#3  0x0000000000427176 in initScreenInfo (dpy=0x802ffc550, screenno=0,
     visInfo=0x7fffffffe010, nvis=1) at screen.c:2589
#4  0x0000000000427adc in InitScreens (dpy=0x802ffc550) at screen.c:2653
#5  0x00000000004203d5 in main (argc=1, argv=0x0) at olwm.c:331
(gdb)

Regards,
gg.