| Index: sdk/lib/io/websocket_impl.dart
|
| diff --git a/sdk/lib/io/websocket_impl.dart b/sdk/lib/io/websocket_impl.dart
|
| index bcb800d84aa80e8f4ca0d812f641b231012f9336..4f00a17a94cd76157157be9ba0933353b26f80bd 100644
|
| --- a/sdk/lib/io/websocket_impl.dart
|
| +++ b/sdk/lib/io/websocket_impl.dart
|
| @@ -458,9 +458,7 @@ class _WebSocketTransformerImpl implements WebSocketTransformer {
|
| HttpResponse response, CompressionOptions compression) {
|
| var extensionHeader = request.headers.value("Sec-WebSocket-Extensions");
|
|
|
| - if (extensionHeader == null) {
|
| - extensionHeader = "";
|
| - }
|
| + extensionHeader ??= "";
|
|
|
| var hv = HeaderValue.parse(extensionHeader, valueSeparator: ',');
|
| if (compression.enabled && hv.value == _WebSocketImpl.PER_MESSAGE_DEFLATE) {
|
|
|