D23411: Fix crash in writer collection and cleanup

[Stefan Brüns]

bruns added inline comments.

INLINE COMMENTS

> apol wrote in writercollection.cpp:133
> maybe it would make sense to use shared pointers there?

No. `m_plugin` is either a QPluginLoader::instance(), i.e. shared, or a collection-owned ExternalWriter.

REPOSITORY
  R286 KFileMetaData

REVISION DETAIL
  https://phabricator.kde.org/D23411

To: astippich, bruns, mgallien, ngraham
Cc: apol, kde-frameworks-devel, #baloo, LeGast00n, fbampaloukas, GB_2, domson, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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