D22759: Fix infinite recursion when using a dummy DB because ksycoca is inaccessible

[David Faure]

dfaure created this revision.
dfaure added a reviewer: sitter.
Herald added a project: Frameworks.
Herald edited subscribers, added: kde-frameworks-devel; removed: Frameworks.
dfaure requested review of this revision.

REVISION SUMMARY
  The unittest for this will be in the next commit (KSycocaTest::testNonReadableSycoca
  actually tests this after KSycocaTest::testGlobalSycoca is removed)

TEST PLAN
  ksycocatest

REPOSITORY
  R309 KService

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D22759

AFFECTED FILES
  src/sycoca/ksycoca.cpp

To: dfaure, sitter
Cc: kde-frameworks-devel, LeGast00n, sbergeron, michaelh, ngraham, bruns
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