[Differential] [Request, 6 lines] D789: Make sure we don't crash when not using a filter

[apol (Aleix Pol Gonzalez)]

apol created this revision.
apol added a reviewer: kfunk.
Herald added a subscriber: kdevelop-devel.

REVISION SUMMARY
  I'm getting a crash and I couldn't really completely figure out the code,
  although this looks like a sane solution and fixes my crash.

TEST PLAN
  Executing a missing target doesn't automatically crash, all tests pass.

REPOSITORY
  rKDEVPLATFORM KDevPlatform

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D789

AFFECTED FILES
  outputview/outputexecutejob.cpp
  outputview/outputmodel.cpp

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: apol, kfunk
Cc: kdevelop-devel