Bug 1704887 - Discard results of RemoveElement for DelayedRunnable r=necko-reviewers,xpcom-reviewers,mccr8,valentin

This silences a lint error on the previous patches in the series.

Differential Revision: https://phabricator.services.mozilla.com/D113160

netwerk/base/nsStreamTransportService.cpp

@@ -283,7 +283,7 @@ void nsStreamTransportService::OnDelayedRunnableRan(
     DelayedRunnable* aRunnable) {
   MOZ_ASSERT(IsOnCurrentThread());
   auto delayedRunnables = mScheduledDelayedRunnables.Lock();
-  delayedRunnables->RemoveElement(aRunnable);
+  Unused << delayedRunnables->RemoveElement(aRunnable);
 }
 
 NS_IMPL_ISUPPORTS(nsStreamTransportService, nsIStreamTransportService,

xpcom/threads/TaskQueue.cpp

@@ -121,7 +121,7 @@ void TaskQueue::OnDelayedRunnableScheduled(DelayedRunnable* aRunnable) {
 
 void TaskQueue::OnDelayedRunnableRan(DelayedRunnable* aRunnable) {
   MOZ_ASSERT(IsOnCurrentThread());
-  mScheduledDelayedRunnables.RemoveElement(aRunnable);
+  Unused << mScheduledDelayedRunnables.RemoveElement(aRunnable);
 }
 
 auto TaskQueue::CancelDelayedRunnables() -> RefPtr<CancelPromise> {

xpcom/threads/ThreadEventTarget.cpp

@@ -151,7 +151,7 @@ void ThreadEventTarget::OnDelayedRunnableScheduled(DelayedRunnable* aRunnable) {
 
 void ThreadEventTarget::OnDelayedRunnableRan(DelayedRunnable* aRunnable) {
   MOZ_ASSERT(IsOnCurrentThread());
-  mScheduledDelayedRunnables.RemoveElement(aRunnable);
+  Unused << mScheduledDelayedRunnables.RemoveElement(aRunnable);
 }
 
 void ThreadEventTarget::NotifyShutdown() {