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-rw-r--r--dom/messagechannel/tests/test_event_listener_leaks.html2
1 files changed, 1 insertions, 1 deletions
diff --git a/dom/messagechannel/tests/test_event_listener_leaks.html b/dom/messagechannel/tests/test_event_listener_leaks.html
index 93ed5215d3..579491dab3 100644
--- a/dom/messagechannel/tests/test_event_listener_leaks.html
+++ b/dom/messagechannel/tests/test_event_listener_leaks.html
@@ -23,7 +23,7 @@ async function useMessagePort(contentWindow) {
mc.port1.postMessage("foo");
await new Promise(resolve => {
- mc.port2.onmessage = e => {
+ mc.port2.onmessage = () => {
contentWindow.messageCount += 1;
resolve();
};