Recent update causes segfault in proxy mode

[Timo Sirainen]

On 29 Apr 2016, at 12:46, Ralf Hildebrandt <Ralf.Hildebrandt at charite.de> wrote:
> 
> * Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:
> 
>> Unfortunately, I'm not getting a backtrace :(
> 
> got it:
> 
> #1  0x00007febcad5407e in array_delete_i (count=1, idx=1992, array=0x7febcd4b7b68) at ../../../../src/lib/array.h:200
> No locals.
> #2  imapc_untagged_expunge (reply=<optimized out>, mbox=0x7febcd4b77f0) at imapc-mailbox.c:473

Fixed by https://github.com/dovecot/core/commit/de8fc9d21460bf0369d671e9ba9361592379a7c5