update locks

app.go

@@ -514,9 +514,6 @@ func (a *App) Boxes() []*Box {
 	log.WithFields(log.Fields{"app": a.name}).Debugf("starting")
 	defer log.WithFields(log.Fields{"app": a.name}).Debugf("done")
 
-	cfgMx.Lock()
-	defer cfgMx.Unlock()
-
 	bm := make(map[string]struct{})
 
 	for _, s := range a.sources {
@@ -552,8 +549,8 @@ func (a *App) RunFull() error {
 		return fmt.Errorf("backup already running")
 	}
 
-	cfgMx.Lock()
-	defer cfgMx.Unlock()
+	CfgLock()
+	defer CfgUnlock()
 
 	cfgRun = true
 	defer func() { cfgRun = false }()