D22948: Fix crash when dropping ShellManager

[Noah Davis]

ndavis added a comment.


  This stops Plasmashell from segfaulting, but now it exits (code 1) with this message every other time `plasmashell --replace &` is run:
  
    org.kde.kactivities.lib.core: Killing the consumer
    org.kde.kactivities.lib.core: Killing the consumer
    org.kde.kactivities.lib.core: Killing the consumer
    Closing SQL connection:  "kactivities_db_resources_140660103657600_readonly"
    org.kde.kactivities.lib.core: Killing the consumer
    file:///home/noah/kde/usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml:74:5: Unable to assign [undefined] to QObject*
    libkcups: Cancel-Subscription last error: 0 successful-ok
    libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
    libkcups: Cancel-Subscription last error: 0 successful-ok
    org.kde.kactivities.lib.core: Killing the consumer
    org.kde.kactivities.lib.core: Killing the consumer
    org.kde.kactivities.lib.core: Killing the consumer
    QObject::connect(AppletsLayout, PlaceHolder_QMLTYPE_67): invalid null parameter
    QObject::connect(AppletsLayout, AppletContainer): invalid null parameter
    QObject::connect(AppletsLayout, AppletContainer): invalid null parameter
    trying to show an empty dialog
    org.kde.kactivities.lib.core: Killing the consumer
    "No such object path '/org/kde/plasmashell'"
    
    [2]  + 30522 exit 1     plasmashell --replace
    
    [1]  + 30496 done       plasmashell --replace #This is the process for the 1st run

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D22948

To: apol, #plasma, mart
Cc: ndavis, plasma-devel, LeGast00n, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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