chore: revise comment

pkg/remote/trans/nphttp2/grpc/http2_client.go

@@ -546,9 +546,7 @@ func (t *http2Client) closeStream(s *Stream, err error, rst bool, rstCode http2.
 		<-s.done
 		return
 	}
-	// status and trailers can be updated here without any synchronization because the stream goroutine will
-	// only read it after it sees an io.EOF error from read or write and we'll write those errors
-	// only after updating this.
+	// status and trailers should be updated here with synchronization because Trailer() function may be called concurrently
 	s.status = st
 	if len(mdata) > 0 {
 		s.cliTlrMu.Lock()

pkg/remote/trans/nphttp2/grpc/http2_client_test.go

@@ -21,11 +21,12 @@ import (
 	"math"
 	"testing"
 
+	"golang.org/x/net/http2"
+
 	"github.com/cloudwego/kitex/internal/test"
 	"github.com/cloudwego/kitex/pkg/remote/trans/nphttp2/codes"
 	"github.com/cloudwego/kitex/pkg/remote/trans/nphttp2/metadata"
 	"github.com/cloudwego/kitex/pkg/remote/trans/nphttp2/status"
-	"golang.org/x/net/http2"
 )
 
 func TestHttp2ClientTrailerRace(t *testing.T) {