Fix helm compiler warning

emacs/.emacs.d/init.el

@@ -462,8 +462,7 @@ MODE1 is enabled and vice-versa."
   :init
   (setq helm-mode-line-string nil)
   :config
-  (setq helm-split-window-in-side-p t
-        helm-buffer-details-flag nil)
+  (setq helm-split-window-in-side-p t)
   ;; Don't truncate lines in Helm buffers
   (add-hook 'helm-after-initialize-hook 'oni:stop-truncating-helm-lines)
   ;; Show helm buffers in a window on the right
@@ -472,6 +471,11 @@ MODE1 is enabled and vice-versa."
                  (side . right)
                  (slot . 1))))
 
+(use-package helm-buffers
+  :defer t
+  :config
+  (setq helm-buffer-details-flag nil))
+
 (use-package js2-mode
   :ensure t
   :mode (("\\.js\\'" . js2-mode)