D10143: baloo-widgets: Apply coding style to filemetadataprovider

[Michael Heidelbach]

michaelh added a dependent revision: D10105: baloo-widgets: Refactor filemetadataprovider for better readability.

REPOSITORY
  R824 Baloo Widgets

REVISION DETAIL
  https://phabricator.kde.org/D10143

To: michaelh, elvisangelaccio, smithjd, ngraham, vhanda, #dolphin
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