Enforce C Locale on Windows on rendering.

Related to #780

src/doc/kdenlivedoc.cpp

@@ -568,9 +568,6 @@ QDomDocument KdenliveDoc::xmlSceneList(const QString &scene)
 
 bool KdenliveDoc::saveSceneList(const QString &path, const QString &scene)
 {
-    QLocale currentLocale; // For restoring after XML export
-    qDebug() << "Current locale is " << currentLocale;
-    QLocale::setDefault(QLocale::c()); // Not sure if helpful …
     QDomDocument sceneList = xmlSceneList(scene);
     if (sceneList.isNull()) {
         // Make sure we don't save if scenelist is corrupted
@@ -618,7 +615,6 @@ bool KdenliveDoc::saveSceneList(const QString &path, const QString &scene)
     }
 
     const QByteArray sceneData = sceneList.toString().toUtf8();
-    QLocale::setDefault(currentLocale);
 
     file.write(sceneData);
     if (!file.commit()) {

src/monitor/monitor.cpp

@@ -1692,7 +1692,17 @@ void Monitor::resetConsumer(bool fullReset)
 
 const QString Monitor::sceneList(const QString &root, const QString &fullPath)
 {
-    return m_glMonitor->sceneList(root, fullPath);
+    // on Windows, the xml consumer doesn't follow LC_NUMERIC, so enforce locale
+#ifdef Q_OS_WIN
+    QLocale currentLocale; // For restoring after XML export
+    qDebug() << "Current locale is " << currentLocale;
+    QLocale::setDefault(QLocale::c()); // Not sure if helpful
+#endif
+    const QString resultScene = m_glMonitor->sceneList(root, fullPath);
+#ifdef Q_OS_WIN
+    QLocale::setDefault(currentLocale);
+#endif
+    return resultScene;
 }
 
 void Monitor::updateClipZone(const QPoint zone)