[Nepomuk] Review Request 110877: Resource: Null guards for m_data

[Simeon Bird]

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Review request for Nepomuk and Vishesh Handa.


Description
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Resource: Null guards for m_data

It is possible, during shutdown, for m_data to be null briefly (see
ResourceManager::cleanupResources). If a property were accessed
during this time, we could crash.

The patch checks whether m_data is null in various functions, and
returns empty items if so.

BUG: 320097
BUG: 319481


This addresses bugs 319481 and 320097.
    http://bugs.kde.org/show_bug.cgi?id=319481
    http://bugs.kde.org/show_bug.cgi?id=320097


Diffs
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  libnepomukcore/resource/resource.cpp da352e1d3ab2bd3d61ec6c2d85e59ffde09914d1 

Diff: http://git.reviewboard.kde.org/r/110877/diff/


Testing
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Compiled, ran


Thanks,

Simeon Bird

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