We also have to check for nodeSourceType() if a new node is created.

Task-number: QTCREATORBUG-5228
Change-Id: Ifccdcb29141c44c176b1a5292fd118e2af55ca5e
Reviewed-on: http://codereview.qt.nokia.com/901


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Marco Bubke <marco.bubke@nokia.com>