[Dovecot] 1.1.beta8 crashes with segfault when SIGHUP

[Timo Sirainen]

On Tue, 2007-11-27 at 23:40 +0200, arvids wrote:
> this problem still persists in beta9.
> I took backtrace for it(with beta9):
> 
> Program received signal SIGSEGV, Segmentation fault.
> log_unref (log_io=0x0) at log.c:268
> 268             i_assert(log_io->refcount > 0);
> (gdb) bt
> #0  log_unref (log_io=0x0) at log.c:268
> #1  0x0804c193 in dict_process_destroyed (process=0x80769d0, pid=14881, 
> abnormal_exit=false) at dict-process.c:168

Fixed crash: http://hg.dovecot.org/dovecot/rev/5f97bba6df15

Fixed error resulting from that fix:
http://hg.dovecot.org/dovecot/rev/373beccc2468

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