lib/model: Consistently show folder description in startup messages

Since we anyway need the folderConfig for this I'm skipping the copying
of all it's attributes that rwfolder did and just keeping the original
around instead.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3825

lib/model/rofolder.go

@@ -20,6 +20,7 @@ func init() {
 
 type sendOnlyFolder struct {
 	folder
+	config.FolderConfiguration
 }
 
 func newSendOnlyFolder(model *Model, cfg config.FolderConfiguration, _ versioner.Versioner, _ *fs.MtimeFS) service {
@@ -30,6 +31,7 @@ func newSendOnlyFolder(model *Model, cfg config.FolderConfiguration, _ versioner
 			stop:         make(chan struct{}),
 			model:        model,
 		},
+		FolderConfiguration: cfg,
 	}
 }
 
@@ -49,7 +51,7 @@ func (f *sendOnlyFolder) Serve() {
 
 		case <-f.scan.timer.C:
 			if err := f.model.CheckFolderHealth(f.folderID); err != nil {
-				l.Infoln("Skipping folder", f.folderID, "scan due to folder error:", err)
+				l.Infoln("Skipping scan of", f.Description(), "due to folder error:", err)
 				f.scan.Reschedule()
 				continue
 			}
@@ -67,7 +69,7 @@ func (f *sendOnlyFolder) Serve() {
 			}
 
 			if !initialScanCompleted {
-				l.Infoln("Completed initial scan (ro) of folder", f.folderID)
+				l.Infoln("Completed initial scan (ro) of", f.Description())
 				initialScanCompleted = true
 			}