Input to QUrl::fromLocalFile should be canonical

The following fails:

QUrl url = QUrl::fromLocalFile("c:/depot/testing/test/../dir with space/test.html");
bool res = QDesktopServices::openUrl(url);
QMessageBox::information(0, url.toString(),
res ? "Success" : "Failure");

while the following works:

QUrl url = QUrl::fromLocalFile("c:/depot/testing/dir with space/test.html");
bool res = QDesktopServices::openUrl(url);
QMessageBox::information(0, url.toString(),
res ? "Success" : "Failure");

QUrl::fromLocalFile does not canonize the input, so the calling code should ensure that "." and ".." are resolved.