From a70e3047cb7e616a253bc2691c88c45bfbe75f7d Mon Sep 17 00:00:00 2001
From: Kershaw Chang <kershaw@mozilla.com>
Date: Tue, 19 Mar 2024 11:05:34 +0000
Subject: [PATCH] Bug 1883171 - Reset the pref properly,
 r=necko-reviewers,valentin

Differential Revision: https://phabricator.services.mozilla.com/D205031
---
 netwerk/test/mochitests/test_rel_preconnect.html | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/netwerk/test/mochitests/test_rel_preconnect.html b/netwerk/test/mochitests/test_rel_preconnect.html
index a0c3309954bf..fd3d0cf31179 100644
--- a/netwerk/test/mochitests/test_rel_preconnect.html
+++ b/netwerk/test/mochitests/test_rel_preconnect.html
@@ -19,12 +19,15 @@ async function doTest()
 {
   await SpecialPowers.setBoolPref("network.http.debug-observations", true);
 
+  SimpleTest.registerCleanupFunction(async () => {
+    await SpecialPowers.setBoolPref("network.http.debug-observations", false);
+  });
+
   observer = SpecialPowers.wrapCallback(function() {
     remainder--;
     ok(true, "observed remainder = " + remainder);
     if (!remainder) {
       SpecialPowers.removeObserver(observer, "speculative-connect-request");
-      SpecialPowers.setBoolPref("network.http.debug-observations", false);
       SimpleTest.finish();
     }
   });