master a8721a3: Make help-view-source more robust

[Lars Ingebrigtsen]

branch: master
commit a8721a333d5cf9080406bd4d9f723bda7a4a8402
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Make help-view-source more robust
    
    * lisp/help-mode.el (help-view-source): Check the right thing to
    see if we can jump to the source file.
---
 lisp/help-mode.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/help-mode.el b/lisp/help-mode.el
index 7450d73..48cf435 100644
--- a/lisp/help-mode.el
+++ b/lisp/help-mode.el
@@ -733,7 +733,7 @@ See `help-make-xrefs'."
 (defun help-view-source ()
   "View the source of the current help item."
   (interactive nil help-mode)
-  (unless help-mode--current-data
+  (unless (plist-get help-mode--current-data :file)
     (error "Source file for the current help item is not defined"))
   (help-function-def--button-function (plist-get help-mode--current-data 
:symbol)
                                       (plist-get help-mode--current-data 
:file)))