Removed default value for the parameter original_url in the UrlHandler::LoadResult() constructor and updated internet services according to this.

src/core/urlhandler.h

@@ -52,7 +52,7 @@ class UrlHandler : public QObject {
       TrackAvailable,
     };
 
-    LoadResult(const QUrl& original_url = QUrl(), Type type = NoMoreTracks,
+    LoadResult(const QUrl& original_url, Type type = NoMoreTracks,
                const QUrl& media_url = QUrl(), qint64 length_nanosec_ = -1);
 
     // The url that the playlist item has in Url().

src/internet/subsonic/subsonicurlhandler.cpp

@@ -26,7 +26,7 @@ SubsonicUrlHandler::SubsonicUrlHandler(SubsonicService* service,
 
 UrlHandler::LoadResult SubsonicUrlHandler::StartLoading(const QUrl& url) {
   if (service_->login_state() != SubsonicService::LoginState_Loggedin)
-    return LoadResult();
+    return LoadResult(url);
 
   QUrl newurl = service_->BuildRequestUrl("stream");
   newurl.addQueryItem("id", url.host());

src/internet/vk/vkservice.cpp

@@ -1196,14 +1196,14 @@ UrlHandler::LoadResult VkService::GetSongResult(const QUrl& url) {
                                   media_url, song.length_nanosec());
   }
 
-  return UrlHandler::LoadResult();
+  return UrlHandler::LoadResult(url);
 }
 
 UrlHandler::LoadResult VkService::GetGroupNextSongUrl(const QUrl& url) {
   QStringList tokens = url.path().split('/');
   if (tokens.count() < 3) {
     qLog(Error) << "Wrong url" << url;
-    return UrlHandler::LoadResult();
+    return UrlHandler::LoadResult(url);
   }
 
   int gid = tokens[1].toInt();
@@ -1232,7 +1232,7 @@ UrlHandler::LoadResult VkService::GetGroupNextSongUrl(const QUrl& url) {
   }
 
   qLog(Info) << "Unresolved group url" << url;
-  return UrlHandler::LoadResult();
+  return UrlHandler::LoadResult(url);
 }
 
 /***

src/internet/vk/vkurlhandler.cpp

@@ -30,7 +30,7 @@ VkUrlHandler::VkUrlHandler(VkService* service, QObject* parent)
 
 UrlHandler::LoadResult VkUrlHandler::StartLoading(const QUrl& url) {
   QStringList args = url.path().split("/");
-  LoadResult result;
+  LoadResult result(url);
 
   if (args.size() < 2) {
     qLog(Error)
@@ -58,6 +58,6 @@ UrlHandler::LoadResult VkUrlHandler::LoadNext(const QUrl& url) {
   if (url.host() == "group") {
     return StartLoading(url);
   } else {
-    return LoadResult();
+    return LoadResult(url);
   }
 }