Very strange crash when the DUChain is cleaned up

[Sven Brauch]

Hmm, that sounds unpleasant. However, i cannot reproduce the issue, I only get 
this:

	FAIL!  : TestFiles::testFiles(directory_import.qml) 
'validator.testsPassed()' returned FALSE. ()
   Loc: [kdev-qmljs/tests/test_files.cpp(116)]

but it seems to exit cleanly.

I built the tip of the wip branch in the scratch repo you linked, anything 
else I need to do to get the crash?

Greetings!