D16812: Avoid potential race condtion with QFutureWatcher in FWUPD backend

[David Edmundson]

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

REVISION SUMMARY
  One should connect to the finish slot before starting the threaded job.

TEST PLAN
  Ran
  Opened FW updates
  Showed none as before, no other issues

REPOSITORY
  R134 Discover Software Store

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D16812

AFFECTED FILES
  libdiscover/backends/FwupdBackend/FwupdBackend.cpp

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