Merge pull request #4923 from RobinGeuze/2.2

Fix Qt4 build

src/libsync/owncloudpropagator.h

@@ -388,6 +388,7 @@ private:
 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
     // access to signals which are protected in Qt4
     friend class PropagateDownloadFileQNAM;
+    friend class PropagateUploadFileQNAM;
 #endif
 };