image pull: close progress chan
so we don't leak a goroutine
@@ -175,6 +175,7 @@ func (s *Server) pullImage(ctx context.Context, pullArgs *pullArguments) (string
// Pull by collecting progress metrics
progress := make(chan types.ProgressProperties)
+ defer close(progress)
go func() {
for p := range progress {
if p.Event == types.ProgressEventSkipped {
