Fix misplaced parentheses in cider-repl-switch-to-other

Fixes #2136

This was causing [failures in CI](https://travis-ci.org/clojure-emacs/cider/jobs/314874715#L1412).

Author: xiongtx

cider-repl.el

@@ -901,9 +901,9 @@ text property `cider-old-input'."
 (defun cider-repl-switch-to-other ()
   "Switch between the Clojure and ClojureScript REPLs for the current project."
   (interactive)
-  (if-let* ((other-connection (cider-other-connection))
+  (if-let* ((other-connection (cider-other-connection)))
       (switch-to-buffer other-connection)
-    (message "There's no other REPL for the current project"))))
+    (message "There's no other REPL for the current project")))
 
 (defvar cider-repl-clear-buffer-hook)