ob-R: Silence byte-compiler

* lisp/ob-R.el (org-babel-R-evaluate-external-process):
(org-babel-R-evaluate-session): Silence byte-compiler.

lisp/ob-R.el

@@ -27,8 +27,9 @@
 ;; Org-Babel support for evaluating R code
 
 ;;; Code:
-(require 'ob)
+
 (require 'cl-lib)
+(require 'ob)
 
 (declare-function orgtbl-to-tsv "org-table" (table params))
 (declare-function R "ext:essd-r" (&optional start-args))
@@ -376,12 +377,12 @@ Has four %s escapes to be filled in:
      body result-type result-params column-names-p row-names-p)))
 
 (defun org-babel-R-evaluate-external-process
-  (body result-type result-params column-names-p row-names-p)
+    (body result-type result-params column-names-p row-names-p)
   "Evaluate BODY in external R process.
 If RESULT-TYPE equals `output' then return standard output as a
 string.  If RESULT-TYPE equals `value' then return the value of the
 last statement in BODY, as elisp."
-  (case result-type
+  (cl-case result-type
     (value
      (let ((tmp-file (org-babel-temp-file "R-")))
        (org-babel-eval org-babel-R-command
@@ -404,12 +405,12 @@ last statement in BODY, as elisp."
 (defvar ess-eval-visibly-p)
 
 (defun org-babel-R-evaluate-session
-  (session body result-type result-params column-names-p row-names-p)
+    (session body result-type result-params column-names-p row-names-p)
   "Evaluate BODY in SESSION.
 If RESULT-TYPE equals `output' then return standard output as a
 string.  If RESULT-TYPE equals `value' then return the value of the
 last statement in BODY, as elisp."
-  (case result-type
+  (cl-case result-type
     (value
      (with-temp-buffer
        (insert (org-babel-chomp body))