Bug 1703634 - Disable test_trr_cancel.js::cancel_immediately for socket process r=necko-reviewers,kershaw

The test is racy in that it expects the request to be immediately cancelled,
but with the socket process that takes an IPC round-trip.

Differential Revision: https://phabricator.services.mozilla.com/D136610

netwerk/test/unit/test_trr_cancel.js

@@ -45,7 +45,11 @@ add_task(async function sanity_check() {
   await new TRRDNSListener("example.com", { expectedAnswer: "1.2.3.4" });
 });
 
-add_task(async function cancel_immediately() {
+// Cancelling the request is not sync when using the socket process, so
+// we skip this test when it's enabled.
+add_task(
+  { skip_if: () => mozinfo.socketprocess_networking },
+  async function cancel_immediately() {
     await trrServer.registerDoHAnswers("example.org", "A", {
       answers: [
         {
@@ -77,7 +81,8 @@ add_task(async function cancel_immediately() {
     equal(inStatus, Cr.NS_ERROR_ABORT);
     await new Promise(resolve => do_timeout(50, resolve));
     equal(await trrServer.requestCount("example.org", "A"), 2);
-});
+  }
+);
 
 add_task(async function cancel_delayed() {
   dns.clearCache(true);