Review Request 117822: Add safety checks to XCB functions in WindowThumbnail

[Martin Gräßlin]

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https://git.reviewboard.kde.org/r/117822/
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Review request for Plasma.


Repository: plasma-framework


Description
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Add safety checks to XCB functions in WindowThumbnail

Prevents XCB warnings about BadWindow when a tooltip is shown for the
first time.


Diffs
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  src/declarativeimports/core/windowthumbnail.cpp d1a7fef1fc5fd119592710d80274d2abe0c8b3b1 

Diff: https://git.reviewboard.kde.org/r/117822/diff/


Testing
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Thanks,

Martin Gräßlin

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