Bug 1923706 - Pass by value, not reference in CamerasChild::AllocateCapture. a=RyanVM

Original Revision: https://phabricator.services.mozilla.com/D225121

Differential Revision: https://phabricator.services.mozilla.com/D225363

dom/media/systemservices/CamerasChild.cpp

@@ -331,7 +331,7 @@ int CamerasChild::AllocateCapture(CaptureEngine aCapEngine,
   LOG(("%s", __PRETTY_FUNCTION__));
   nsCString unique_id(unique_idUTF8);
   nsCOMPtr<nsIRunnable> runnable =
-      mozilla::NewRunnableMethod<CaptureEngine, nsCString, const uint64_t&>(
+      mozilla::NewRunnableMethod<CaptureEngine, nsCString, uint64_t>(
           "camera::PCamerasChild::SendAllocateCapture", this,
           &CamerasChild::SendAllocateCapture, aCapEngine, unique_id, aWindowID);
   LockAndDispatch<> dispatcher(this, __func__, runnable, -1, mReplyInteger);