Review Request 115255: Add x11 platform detection to kkeyserver_x11

[Martin Gräßlin]

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https://git.reviewboard.kde.org/r/115255/
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Review request for KDE Frameworks.


Repository: kwindowsystem


Description
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Add x11 platform detection to kkeyserver_x11

Just because it's only compiled for X11 doesn't mean it's running on
X11. So before we go into code paths which call into X11 we should
verify. That's better than:
"QX11Info::display() returns 0.  I'm probably going to crash now."

Not adjusted are obvious X11 methods which take an XLib or xcb data
type. If one calls those from non-x11 unconditionally it's an
application bug and the application deserves to crash :-P


Diffs
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  src/kkeyserver_x11.cpp fd0ca5b25f09808e211198ce0f7aa56aa21e05f4 

Diff: https://git.reviewboard.kde.org/r/115255/diff/


Testing
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Thanks,

Martin Gräßlin

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