master eaad6ea: Fix display of man pages after killing the 'man' process

[Eli Zaretskii]

branch: master
commit eaad6eac0018c2f3b35af7c522f9d02618918a3a
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix display of man pages after killing the 'man' process
    
    * lisp/man.el (Man-bgproc-filter, Man-bgproc-sentinel): Use
    'buffer-live-p' instead of just testing the buffer's name.
    (Bug#42160)
---
 lisp/man.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lisp/man.el b/lisp/man.el
index 8a36f3a..3121334 100644
--- a/lisp/man.el
+++ b/lisp/man.el
@@ -1396,7 +1396,7 @@ synchronously, PROCESS is the name of the buffer where 
the manpage
 command is run.  Second argument STRING is the entire string of output."
   (save-excursion
     (let ((Man-buffer (process-buffer process)))
-      (if (null (buffer-name Man-buffer)) ;; deleted buffer
+      (if (not (buffer-live-p Man-buffer)) ;; deleted buffer
          (set-process-buffer process nil)
 
        (with-current-buffer Man-buffer
@@ -1430,7 +1430,7 @@ manpage command."
        (delete-buff nil)
        message)
 
-    (if (null (buffer-name Man-buffer)) ;; deleted buffer
+    (if (not (buffer-live-p Man-buffer)) ;; deleted buffer
        (or (stringp process)
            (set-process-buffer process nil))