elpaca-menu-melpa: ensure cache rewritten after updating

See: #457

Author: progfolio

elpaca-menu-melpa.el

@@ -130,9 +130,9 @@ If REQUEST is `update`, update the MELPA recipe cache."
   (pcase request
     ('index  (elpaca-menu-melpa--index item))
     ('update (setq elpaca-menu-melpa--index-cache nil)
-             (if (file-exists-p (expand-file-name "melpa/" elpaca-cache-directory))
-                 (elpaca-menu-melpa--update)
-               (elpaca-menu-melpa 'index item)))))
+             (when (file-exists-p (expand-file-name "melpa/" elpaca-cache-directory))
+               (elpaca-menu-melpa--update))
+             (elpaca-menu-melpa 'index item))))
 
 (provide 'elpaca-menu-melpa)
 ;;; elpaca-menu-melpa.el ends here