Fix a defcustom type in gdb-mi.el

* lisp/progmodes/gdb-mi.el (gdb-display-source-buffer-action): Fix
defcustom type to match the value.

diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index c71574ec3c6aafd068df0489da12061f0a51576c..086f0b6a085543ec6103a2b21172c6fc447fb071 100644 (file)
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -650,7 +650,7 @@ Note that this variable only takes effect when variable
 
 (defcustom gdb-display-source-buffer-action '(nil . ((inhibit-same-window . t)))
   "`display-buffer' action used when GDB displays a source buffer."
-  :type 'list
+  :type 'sexp
   :group 'gdb
   :version "28.1")