emacs-27 be0d1ca: Small fix for type of 'display-fill-column-indicator-character'

[Philipp Stephani]

branch: emacs-27
commit be0d1cac83d14596406571f9cb668031ec5675ac
Author: Philipp Stephani <address@hidden>
Commit: Philipp Stephani <address@hidden>

    Small fix for type of 'display-fill-column-indicator-character'
    
    * lisp/cus-start.el (standard): Don't mark t as safe file-local value
    for 'display-fill-column-indicator-character', as that value isn't
    allowed.
---
 lisp/cus-start.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/cus-start.el b/lisp/cus-start.el
index bd32c7c..6632687 100644
--- a/lisp/cus-start.el
+++ b/lisp/cus-start.el
@@ -780,7 +780,7 @@ since it could result in memory overflow and make Emacs 
crash."
                       :value nil)
                character)
               "27.1"
-              :safe (lambda (value) (or (characterp value) (booleanp value))))
+              :safe (lambda (value) (or (characterp value) (null value))))
             ;; xfaces.c
             (scalable-fonts-allowed display boolean "22.1")
             ;; xfns.c