D22238: Fix creation of kdeglobals if /etc/xdg/kdeglobals present

fvogt added a comment.


  Basically doing
  `!m_colorScheme.startsWith(QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation))`
  instead might work, but maybe there are cases with more than once writable location?
  
  The failure mode would be better though, writing to kdeglobals even if not necessary, compared to not creating kdeglobals at all.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D22238

To: fvogt, #plasma
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