[REG 5.15.2->5.15.3]: When loading a XML file with a XSLT stylesheet it will indicate that it failed to load when it has loaded fine

[REG 5.15.2->5.15.3]: When loading a XML file with a XSLT stylesheet it will indicate that it failed to load when it has loaded fine. loadFinished() is being emitted with ok = false, but there is no error in this case.