Added Q_DECL_UNUSED for the function used in Q_ASSERT; removed the
functions that really weren't used and added the #ifdef for the
function that was only used under #ifdef.
qmetaobjectbuilder.cpp(93): warning #177: function "priv" was declared but never referenced
qobject.cpp(2349): warning #177: function "check_and_warn_compat" was declared but never referenced
qpathsimplifier.cpp(141): error #177: function "<unnamed>::Rational::isValid" was declared but never referenced
qtextengine.cpp(2584): error #177: function "<unnamed>::QScriptItemComparator::operator()(const QScriptItem &, const QScriptItem &)" was declared but never referenced
Change-Id: I89a140d59211f10ecd88d751f0bcc0ea2fedff7f
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>