Don't check for missing resources in playlist if producer does not use a real...

Don't check for missing resources in playlist if producer does not use a real file (like counter, noise, ...)

src/doc/documentchecker.cpp

@@ -117,10 +117,12 @@ bool DocumentChecker::hasErrorInClips()
     m_missingFonts.clear();
     max = documentProducers.count();
     QStringList verifiedPaths;
+    QStringList serviceToCheck;
+    serviceToCheck << QStringLiteral("kdenlivetitle") << QStringLiteral("qimage") << QStringLiteral("pixbuf") << QStringLiteral("timewarp") << QStringLiteral("framebuffer");
     for (int i = 0; i < max; ++i) {
         e = documentProducers.item(i).toElement();
 	QString service = EffectsList::property(e, QStringLiteral("mlt_service"));
-        if (service == QLatin1String("colour") || service == QLatin1String("color")) continue;
+        if (!service.startsWith(QLatin1String("avformat")) && !serviceToCheck.contains(service)) continue;
         if (service == QLatin1String("qtext")) {
             checkMissingImagesAndFonts(QStringList(), QStringList(EffectsList::property(e, QStringLiteral("family"))),
                                        e.attribute(QStringLiteral("id")), e.attribute(QStringLiteral("name")));

src/onmonitoritems/rotoscoping/rotowidget.cpp

@@ -350,7 +350,6 @@ void RotoWidget::setupTrackingListen(const ItemInfo &info)
         return;
     }
 
-    int i = 0;
     Mlt::Service service(*clip);
     for (int ix = 0; ix < service.filter_count(); ++ix) {
         QScopedPointer<Mlt::Filter> effect(service.filter(ix));