Bug 1664433 - Explicitly include Sprintf.h in RemoteWorkerManager.cpp to fix build error on ppc64le/s390x platforms. r=asuth,dom-workers-and-storage-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D90263

dom/workers/remoteworkers/RemoteWorkerManager.cpp

@@ -15,6 +15,9 @@
 #include "mozilla/ipc/BackgroundParent.h"
 #include "mozilla/ipc/BackgroundUtils.h"
 #include "mozilla/ipc/PBackgroundParent.h"
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+#  include "mozilla/Sprintf.h"  // SprintfLiteral
+#endif
 #include "mozilla/StaticPrefs_extensions.h"
 #include "nsCOMPtr.h"
 #include "nsIE10SUtils.h"