There was an inconsistency, since the AST used in ResolveExpression
was not really the same previously computed. In the particular issue
below a crash could occur, for example, when using auto in a for
range loop.

Task-number: QTCREATORBUG-7828
Change-Id: I02958f434c3cf3b50609546003fc141674ee78d5
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>