Review Request 122908: Fix segfaults due to missing screens

[Jan Kundrát]

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https://git.reviewboard.kde.org/r/122908/
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Review request for KDE Frameworks.


Repository: kwindowsystem


Description
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Fix segfaults due to missing screens

Qt 5.5 has some changes which allow returning of null QScreen*. This
file was OK with such a situation throughout a lot of other places, but
these two were missing.


Diffs
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  src/kwindoweffects_x11.cpp 661a0af95a7a1757c5ae863270434b0c2d5c0a26 

Diff: https://git.reviewboard.kde.org/r/122908/diff/


Testing
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Thanks,

Jan Kundrát

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