D16410: [Bookmarks Runner] Avoid leaking FetchSqlite instances

[Stefan Brüns]

bruns created this revision.
bruns added a reviewer: Frameworks.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
bruns requested review of this revision.

REVISION SUMMARY
  The favicon and places instances are created in the prepare() call,
  leaking the instance from the last invocation. Delete the old
  instance in teardown().
  
  See also T9626 <https://phabricator.kde.org/T9626>.

TEST PLAN
  run several queries in krunner
  -> instances are no longer leaked

REPOSITORY
  R120 Plasma Workspace

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D16410

AFFECTED FILES
  runners/bookmarks/browsers/firefox.cpp

To: bruns, #frameworks
Cc: plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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