[pkg-kolab] Bug#411240: kolab-cyrus-imapd: Fix bug 411240 by checking for null data pointers in quota_read

[David Härdeman]

tags 411240 +patch
thanks

The attached patch changes the quota_read function from imap/quota_db.c 
to check for a null data pointer (caused by zero length files) before 
trying to work with it. Thanks to Ulrich P. Klein for the detailed BR.

-- 
David Härdeman
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