Don't access unique pointer after it was moved from

brightray/browser/inspectable_web_contents_impl.cc

@@ -800,10 +800,12 @@ void InspectableWebContentsImpl::OnURLFetchComplete(
   DCHECK(it != pending_requests_.end());
 
   base::DictionaryValue response;
-  auto headers = base::MakeUnique<base::DictionaryValue>();
+
   net::HttpResponseHeaders* rh = source->GetResponseHeaders();
   response.SetInteger("statusCode", rh ? rh->response_code() : 200);
-  response.Set("headers", std::move(headers));
+
+  {
+    auto headers = base::MakeUnique<base::DictionaryValue>();
 
     size_t iterator = 0;
     std::string name;
@@ -811,6 +813,9 @@ void InspectableWebContentsImpl::OnURLFetchComplete(
     while (rh && rh->EnumerateHeaderLines(&iterator, &name, &value))
       headers->SetString(name, value);
 
+    response.Set("headers", std::move(headers));
+  }
+
   it->second.Run(&response);
   pending_requests_.erase(it);
   delete source;