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-rw-r--r--toolkit/components/contextualidentity/ContextualIdentityService.sys.mjs2
1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/contextualidentity/ContextualIdentityService.sys.mjs b/toolkit/components/contextualidentity/ContextualIdentityService.sys.mjs
index 738f8743ee..32f3577c93 100644
--- a/toolkit/components/contextualidentity/ContextualIdentityService.sys.mjs
+++ b/toolkit/components/contextualidentity/ContextualIdentityService.sys.mjs
@@ -41,7 +41,7 @@ _TabRemovalObserver.prototype = {
QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
- observe(subject, topic, data) {
+ observe(subject) {
let remoteTab = subject.QueryInterface(Ci.nsIRemoteTab);
if (this._remoteTabIds.has(remoteTab.tabId)) {
this._remoteTabIds.delete(remoteTab.tabId);