AutoTest: Fix retrieving metrics information

Change-Id: Ic0a1e1fbf8db613d0d6b20532a3ef404f625e7b1
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/autotest/qtest/qttestoutputreader.cpp

@@ -195,7 +195,7 @@ void QtTestOutputReader::processOutput()
                     m_lineNumber = attributes.value(QStringLiteral("line")).toInt();
                 } else if (currentTag == QStringLiteral("BenchmarkResult")) {
                     const QXmlStreamAttributes &attributes = m_xmlReader.attributes();
-                    const QString metric = attributes.value(QStringLiteral("metrics")).toString();
+                    const QString metric = attributes.value(QStringLiteral("metric")).toString();
                     const double value = attributes.value(QStringLiteral("value")).toDouble();
                     const int iterations = attributes.value(QStringLiteral("iterations")).toInt();
                     m_description = constructBenchmarkInformation(metric, value, iterations);