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-rw-r--r--testing/talos/talos/tests/devtools/addon/content/tests/head.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/head.js b/testing/talos/talos/tests/devtools/addon/content/tests/head.js
index 559ca21d2d..910cbe1e30 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/head.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/head.js
@@ -114,7 +114,7 @@ function waitForDOMPredicate(
return Promise.resolve(rv);
}
return new Promise(resolve => {
- const observer = new target.ownerGlobal.MutationObserver(mutations => {
+ const observer = new target.ownerGlobal.MutationObserver(() => {
rv = predicate();
if (rv) {
resolve(rv);