add file poller panic fix from 1.10.2

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

filenotify/poller.go

@@ -118,8 +118,6 @@ func (w *filePoller) Close() error {
 		w.remove(name)
 		delete(w.watches, name)
 	}
-	close(w.events)
-	close(w.errors)
 	return nil
 }
 
@@ -146,6 +144,7 @@ func (w *filePoller) sendErr(e error, chClose <-chan struct{}) error {
 // watch is responsible for polling the specified file for changes
 // upon finding changes to a file or errors, sendEvent/sendErr is called
 func (w *filePoller) watch(f *os.File, lastFi os.FileInfo, chClose chan struct{}) {
+	defer f.Close()
 	for {
 		time.Sleep(watchWaitTime)
 		select {

filenotify/poller_test.go

@@ -93,24 +93,6 @@ func TestPollerClose(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	select {
-	case _, open := <-w.Events():
-		if open {
-			t.Fatal("event chan should be closed")
-		}
-	default:
-		t.Fatal("event chan should be closed")
-	}
-
-	select {
-	case _, open := <-w.Errors():
-		if open {
-			t.Fatal("errors chan should be closed")
-		}
-	default:
-		t.Fatal("errors chan should be closed")
-	}
-
 	f, err := ioutil.TempFile("", "asdf")
 	if err != nil {
 		t.Fatal(err)