From: Stephen Gildea <stepheng+emacs@gildea.com>
Date: Tue, 28 Jan 2020 05:28:21 +0000 (-0800)
Subject: dns-mode-soa-auto-increment-serial: safe if symbolp
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dns-mode-soa-auto-increment-serial: safe if symbolp

* lisp/textmodes/dns-mode.el (dns-mode-soa-auto-increment-serial):
Mark variable as safe as a file local variable when symbolp.
---

diff --git a/lisp/textmodes/dns-mode.el b/lisp/textmodes/dns-mode.el
index 3bdea946105..6dfea8f1887 100644
--- a/lisp/textmodes/dns-mode.el
+++ b/lisp/textmodes/dns-mode.el
@@ -134,6 +134,7 @@ manually with \\[dns-mode-soa-increment-serial]."
   :type '(choice (const :tag "Always" t)
 		 (const :tag "Ask" ask)
 		 (const :tag "Never" nil))
+  :safe 'symbolp
   :group 'dns-mode)
 
 ;; Syntax table.