bug#15064: 24.3.50; emacs_backtrace.txt

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Fri, 9 Aug 2013 22:44:47 +0200
> Cc: 15064@debbugs.gnu.org
> 
> w32_backtrace at w32fns.c:7990
> emacs_abort at w32fns.c:8022
> terminate_due_to_signal at emacs.c:369
> die at alloc.c:6558
> matrix_row at dispnew.c:1452
> draw_glyphs at xdisp.c:23853
> expose_area at xdisp.c:28640

Thanks.  I have no idea how could the mouse face coordinates be
outside valid limits here, but I think I worked around the problem in
trunk revision 113778.