Review Request 109844: Fixes a Null pointer problem and increase readability

[Ömer Fadıl Usta]

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http://git.reviewboard.kde.org/r/109844/
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Review request for kde-workspace.


Description
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I have faced a "TaskManager::AlphaSortingStrategy::sortItems: Null Pointer" error in my .xsession_errors file and when i  check cpp i have saw that :
      TaskItem *item = qobject_cast<TaskItem*>(groupable);
on the other hand all checkings for qroupable variable are in other if clauses which are not satisfy all situations.


Diffs
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  libs/taskmanager/strategies/alphasortingstrategy.cpp d4dda00 

Diff: http://git.reviewboard.kde.org/r/109844/diff/


Testing
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Thanks,

Ömer Fadıl Usta

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