Optimize Linux process finder

route/platform_searcher.go

@@ -43,3 +43,7 @@ func (s *platformSearcher) FindProcessInfo(ctx context.Context, network string,
 
 	return s.platform.FindConnectionOwner(request)
 }
+
+func (s *platformSearcher) Close() error {
+	return nil
+}

route/router.go

@@ -196,6 +196,13 @@ func (r *Router) Close() error {
 		})
 		monitor.Finish()
 	}
+	if r.processSearcher != nil {
+		monitor.Start("close process searcher")
+		err = E.Append(err, r.processSearcher.Close(), func(err error) error {
+			return E.Cause(err, "close process searcher")
+		})
+		monitor.Finish()
+	}
 	return err
 }