If we have a simple match in mozPhoneNumberService.fuzzyMatch (ie, we don't have to call into the parent for country code logic), we will fire the DOMRequest success without calling DOMRequestIpcHelper.removeRequest. This is a memory leak.
Whoops, we actually don't need to call removeRequest in this case, since we don't store it on the IPC helper unless we actually use IPC. Go figure. Marking invalid.