Never use reference when iterating QJsonArray

src/scrobbler/lastfmimport.cpp

@@ -356,7 +356,7 @@ void LastFMImport::GetRecentTracksRequestFinished(QNetworkReply *reply, const in
 
     QJsonArray array_track = json_obj["track"].toArray();
 
-    for (const QJsonValue &value_track : array_track) {
+    for (const QJsonValue value_track : array_track) {
 
       ++lastplayed_received_;
 
@@ -516,7 +516,7 @@ void LastFMImport::GetTopTracksRequestFinished(QNetworkReply *reply, const int p
   else {
 
     QJsonArray array_track = json_obj["track"].toArray();
-    for (const QJsonValue &value_track : array_track) {
+    for (const QJsonValue value_track : array_track) {
 
       ++playcount_received_;
 

src/scrobbler/scrobblercache.cpp

@@ -102,7 +102,7 @@ void ScrobblerCache::ReadCache() {
     return;
   }
 
-  for (const QJsonValue &value : json_array) {
+  for (const QJsonValue value : json_array) {
     if (!value.isObject()) {
       qLog(Error) << "Scrobbler cache JSON tracks array value is not an object.";
       qLog(Debug) << value;

src/scrobbler/scrobblingapi20.cpp

@@ -711,7 +711,7 @@ void ScrobblingAPI20::ScrobbleRequestFinished(QNetworkReply *reply, QList<quint6
     return;
   }
 
-  for (const QJsonValue &value : array_scrobble) {
+  for (const QJsonValue value : array_scrobble) {
 
     if (!value.isObject()) {
       Error("Json scrobbles scrobble array value is not an object.", value);