master 69efc36c6b: Fix eval-tests/backtrace-in-batch-mode test

[Stefan Monnier]

branch: master
commit 69efc36c6beae586ca9ec429229f35bcc5c69b5b
Author: Stefan Monnier <monnier@iro.umontreal.ca>
Commit: Stefan Monnier <monnier@iro.umontreal.ca>

    Fix eval-tests/backtrace-in-batch-mode test
    
    * lisp/emacs-lisp/debug-early.el (debug-early-backtrace): Fix the
    zero-arg case.
---
 lisp/emacs-lisp/debug-early.el | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lisp/emacs-lisp/debug-early.el b/lisp/emacs-lisp/debug-early.el
index e233e09e29..85ed5f2176 100644
--- a/lisp/emacs-lisp/debug-early.el
+++ b/lisp/emacs-lisp/debug-early.el
@@ -53,10 +53,11 @@ of the build process."
           (progn
             (princ "  (")
             (setq args (cons func args))))
-        (while (progn
-                 (prin1 (car args))
-                 (setq args (cdr args)))
-          (princ " "))
+        (if args
+            (while (progn
+                     (prin1 (car args))
+                     (setq args (cdr args)))
+              (princ " ")))
         (princ ")\n"))))))
 
 (defalias 'debug-early