Review Request 123999: Don't crash in XRandrBrightness if not on xcb

[Martin Gräßlin]

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https://git.reviewboard.kde.org/r/123999/
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Review request for Plasma, Solid and Kai Uwe Broulik.


Repository: powerdevil


Description
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On e.g. platform wayland XRandrBrightness shouldn't do anything. By
skipping the initialization the isSupported returns false.


Diffs
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  daemon/backends/upower/xrandrbrightness.cpp f1cd5a5a0958e72aea87bfda88642faaa696f850 

Diff: https://git.reviewboard.kde.org/r/123999/diff/


Testing
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kded5 no longer crashes when initializing powerdevil when running with platform wayland.


Thanks,

Martin Gräßlin

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