Review Request: set brightness to zero in profile doesn't work

[Xuetian Weng]

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http://git.reviewboard.kde.org/r/108230/
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Review request for kde-workspace and Kai Uwe Broulik.


Description
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fix is trivial, since -1 is the invalid value in this part of code, not zero.

Uncheck the brightness will set m_defaultValue to -1 so no function is lost.


This addresses bug 306925.
    http://bugs.kde.org/show_bug.cgi?id=306925


Diffs
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  powerdevil/daemon/actions/bundled/brightnesscontrol.cpp 5088e4e 
  powerdevil/daemon/brightnessosdwidget.h ef08903 
  powerdevil/daemon/brightnessosdwidget.cpp e4cf80a 

Diff: http://git.reviewboard.kde.org/r/108230/diff/


Testing
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now zero in profile works.


Thanks,

Xuetian Weng

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