Chromium Code Reviews| Index: tests/standalone/debugger/debug_lib.dart |
| diff --git a/tests/standalone/debugger/debug_lib.dart b/tests/standalone/debugger/debug_lib.dart |
| index fbfcc78ecd6f08e918fcffcb1eaff97c45d31c8e..0d13f7aec8497c9fa937db6c40ba06586f4f4fbb 100644 |
| --- a/tests/standalone/debugger/debug_lib.dart |
| +++ b/tests/standalone/debugger/debug_lib.dart |
| @@ -29,7 +29,7 @@ class JsonBuffer { |
| if (buffer == null || buffer.length == 0) { |
| buffer = s; |
| } else { |
| - buffer = buffer.concat(s); |
| + buffer += s; |
| } |
| } |