D29105: Network Filesharing: Fix compile warnings and trivial improvements

[Nathaniel Graham]

ngraham accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R432 File Sharing (Samba) integration

BRANCH
  fix_warnings (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29105

To: alex, #dolphin, ngraham, mlaurent
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