fast-import: die_nicely() back to vsnprintf (reverts part of
ebaa79f)
ebaa79f (Make report() from usage.c public as vreportf() and use it.,
2010-03-06) changed fast-import's die_nicely() to use vreportf().
Unfortunately this is not possible: we need the message again for
write_report(), and vreportf() uses vsnprintf(), which invalidates the
va_list. As pointed out by Erik Faye-Lund, va_copy is C99 and thus
not an option.
So revert the part of
ebaa79f that pertains to die_nicely().
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>