minor code improvement

diff --git a/app/assets/javascripts/admin/controllers/admin-user-index.js b/app/assets/javascripts/admin/controllers/admin-user-index.js
index f69993c..9076e56 100644
--- a/app/assets/javascripts/admin/controllers/admin-user-index.js
+++ b/app/assets/javascripts/admin/controllers/admin-user-index.js
@@ -220,13 +220,13 @@ export default Controller.extend(CanCheckEmails, {
         admin: true,
         model: {
           username: this.model.username,
-          targetUsername: targetUsername
+          targetUsername
         }
       });
     },
 
     merge(targetUsername) {
-      return this.model.merge({ targetUsername: targetUsername });
+      return this.model.merge({ targetUsername });
     },
 
     viewActionLogs() {

GitHub sha: ceee855d