Fix Non-existent commands in flymake-diagnostics-buffer-mode-map

* lisp/progmodes/flymake.el (flymake-diagnostics-buffer-mode-map):
Only bind 'n' and 'p' when 'next-error-this-buffer-no-select' is
defined.  For releasing on ELPA (bug#79930).
Bump the package version to 1.4.4.

1 files changed, 4 insertions, 3 deletions

diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 1b81c4a36e6..888f268429b 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -4,7 +4,7 @@
 
 ;; Author: Pavel Kobyakov <pk_at_work@yahoo.com>
 ;; Maintainer: Spencer Baugh <sbaugh@janestreet.com>
-;; Version: 1.4.3
+;; Version: 1.4.4
 ;; Keywords: c languages tools
 ;; Package-Requires: ((emacs "26.1") (eldoc "1.14.0") (project "0.11.1"))
 
@@ -1875,8 +1875,9 @@ TYPE is usually keyword `:error', `:warning' or `:note'."
     (define-key map (kbd "SPC") #'flymake-show-diagnostic)
     (define-key map (kbd "C-o") #'flymake-show-diagnostic)
     (define-key map (kbd "C-m") #'flymake-goto-diagnostic)
-    (define-key map (kbd "n") #'next-error-this-buffer-no-select)
-    (define-key map (kbd "p") #'previous-error-this-buffer-no-select)
+    (when (fboundp 'next-error-this-buffer-no-select)
+      (define-key map (kbd "n") #'next-error-this-buffer-no-select)
+      (define-key map (kbd "p") #'previous-error-this-buffer-no-select))
     map))
 
 (defun flymake-show-diagnostic (pos &optional other-window)