* lisp/pcmpl-gnu.el (pcomplete/tar): Check obsolete variable is bound.

lisp/ChangeLog

 2013-06-01  Glenn Morris  <rgm@gnu.org>
+	* pcmpl-gnu.el (pcomplete/tar): Check obsolete variable is bound.
+
 	Plain (f)boundp silences compilation warnings since Emacs 22.1.
 	* progmodes/cc-cmds.el (delete-forward-p):
 	* progmodes/cc-defs.el (buffer-syntactic-context-depth):

lisp/pcmpl-gnu.el

@@ -158,7 +158,8 @@
   "Completion for the GNU tar utility."
   ;; options that end in an equal sign will want further completion...
   (let (saw-option complete-within)
-    (let ((pcomplete-suffix-list (cons ?= pcomplete-suffix-list)))
+    (let ((pcomplete-suffix-list (if (boundp 'pcomplete-suffix-list)
+                                     (cons ?= pcomplete-suffix-list))))
       (while (pcomplete-match "^-" 0)
         (setq saw-option t)
         (if (pcomplete-match "^--" 0)