[REVIEW-3-5-5] Use after delete in oox

[Lubos Lunak]

 Hello,

 please review and backport to 3-5 and 3-5-5 the attached patch.

 It is a stripped down version of a revert 
(http://cgit.freedesktop.org/libreoffice/core/commit/?id=831c2d9528) and 
rewrite (http://cgit.freedesktop.org/libreoffice/core/commit/?id=886e29cff7) 
in master, but I don't feel confident enough about the rewrite for a backport 
at this point, so the patch is just a band-aid. The current 3-5 code has a 
use-after-delete problem caused by the fact that it's not possible to take 
out a pointer out of a shared_ptr based container.

-- 
 Lubos Lunak
 l.lunak at suse.cz
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