Bug 1750525: Do not IPC_FAIL in Database::RecvDeleteMe on Send__delete__ failure. r=dom-storage-reviewers,janv

Differential Revision: https://phabricator.services.mozilla.com/D136161

dom/indexedDB/ActorsParent.cpp

@@ -10144,10 +10144,8 @@ mozilla::ipc::IPCResult Database::RecvDeleteMe() {
   AssertIsOnBackgroundThread();
   MOZ_ASSERT(!mActorDestroyed);
 
-  IProtocol* mgr = Manager();
-  if (!PBackgroundIDBDatabaseParent::Send__delete__(this)) {
-    return IPC_FAIL_NO_REASON(mgr);
-  }
+  QM_WARNONLY_TRY(OkIf(PBackgroundIDBDatabaseParent::Send__delete__(this)));
+
   return IPC_OK();
 }