QmltcCodeWriter::write does not do error checking

static void writeToFile(const QString &path, const QByteArray &data)
{
    // When not using dependency files, changing a single qml invalidates all
    // qml files and would force the recompilation of everything. To avoid that,
    // we check if the data is equal to the existing file, if yes, don't touch
    // it so the build system will not recompile unnecessary things.
    //
    // If the build system use dependency file, we should anyway touch the file
    // so qmltc is not re-run
    QFileInfo fi(path);
    if (fi.exists() && fi.size() == data.size()) {
        QFile oldFile(path);
        oldFile.open(QIODevice::ReadOnly);
        if (oldFile.readAll() == data)
            return;
    }
    QFile file(path);
    file.open(QIODevice::WriteOnly);
    file.write(data);
}