D14994: Show device label only if there is one

Wed Aug 22 11:20:12 BST 2018

broulik created this revision.
broulik added reviewers: Windows, vonreth.
Herald added a project: Frameworks.
Herald added a subscriber: kde-frameworks-devel.
broulik requested review of this revision.

REVISION SUMMARY
  Avoids showing `C: ()` for drives without a label

TEST PLAN
  `solid-hardware5.exe details /org/kde/solid/win/volume/disk#0.partition#1` output correctly showed

    description = 'C:' (string)

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D14994

AFFECTED FILES
  src/solid/devices/backends/win/windevice.cpp

To: broulik, #windows, vonreth
Cc: kde-frameworks-devel, michaelh, ngraham, bruns
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