QML Editor: Error underlining shows for boolean properties in certain circumstances (Regression from 2.1)

Steps to reproduce:

• Create new QML file:

import QtQuick 1.0

Text { \n
property string t \n
enabled: t != "" \n
visible: tt Unable to render embedded object: File (= "" // Error/Warning underlining will show up for operator ') not found.=', saying (type coercion, use === , etc) \n
}

Note that the error underlining shows up for tt, although tt is not known.

This was noticed looking at a list delegate defining properties depending on its model's properties. In this case, it may cause confusion.