Review Request 122795: Fix crashes when attempting to load invalid package

[Alex Richardson]

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https://git.reviewboard.kde.org/r/122795/
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Review request for KDE Frameworks and Plasma.


Repository: plasma-framework


Description
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AppletQuickItem: don't crash if d->qmlObject->mainComponent() is null

The if branch is entered if d->qmlObject->mainComponent() is null, but then
it is unconditionally dereferenced causing a potential crash


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Don't crash if mainscript is missing

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Better error message if applet could not be loaded


Diffs
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  src/plasmaquick/appletquickitem.cpp 1abedf0d9089c69d12b981d4597363cb1c6fc443 
  src/scriptengines/qml/plasmoid/wallpaperinterface.cpp a406d452cadbe6afa6a51a127b6bc98ce137ddae 

Diff: https://git.reviewboard.kde.org/r/122795/diff/


Testing
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no longer crashes, prints an error message instead


Thanks,

Alex Richardson

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