AutoTest: Fails to find tests

Steps to reproduce:

• open clean QC repository
• configure project with one kit
• while codemodel is parsing switch to Projects
  • open the Qmake-call Details
  • add BUILD_TESTS=1
  • switch back to Editor [codemodel parsing will be stopped internally and triggered again]
• codemodel parsing seems to be faster than usual
• after codemodel parsing has finished Scanning for Tests should appear
• opening the Tests tree reveals only some tests or none at all [depends on how far the codemodel was while parsing the first time]