Doc fix for x-win-suspend-error

* lisp/term/w32-win.el (x-win-suspend-error):
* lisp/term/x-win.el (x-win-suspend-error): Sync docs.

lisp/ChangeLog

+2014-04-11  Glenn Morris  <rgm@gnu.org>
+
+	* term/w32-win.el (x-win-suspend-error):
+	* term/x-win.el (x-win-suspend-error): Sync docs.
+
 2014-04-10  Stefan Monnier  <monnier@iro.umontreal.ca>
 	Ediff's overlay priorities cause more trouble than they solve.

lisp/term/w32-win.el

@@ -206,7 +206,8 @@ European languages which are distributed with Windows as
 See the documentation of `create-fontset-from-fontset-spec' for the format.")
 
 (defun x-win-suspend-error ()
-  "Report an error when a suspend is attempted."
+  "Report an error when a suspend is attempted.
+This returns an error if any Emacs frames are X frames, or always under W32."
   (error "Suspending an Emacs running under W32 makes no sense"))
 
 (defvar dynamic-library-alist)

lisp/term/x-win.el

@@ -1326,6 +1326,8 @@ Request data types in the order specified by `x-select-request-type'."
 ;;; Window system initialization.
 
 (defun x-win-suspend-error ()
+  "Report an error when a suspend is attempted.
+This returns an error if any Emacs frames are X frames, or always under W32."
   ;; Don't allow suspending if any of the frames are X frames.
   (if (memq 'x (mapcar 'window-system (frame-list)))
       (error "Cannot suspend Emacs while running under X")))