From b9d465c89f9feac4848137ba3587b1c1f0bb886c Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 5 Aug 2024 08:39:08 +0200
Subject: [PATCH] tool_help: fix a NULL deref in the --help option code

Follow-up to 9a0cf56471c1a

Pointed out by CodeSonar

Closes #14391
---
 src/tool_help.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tool_help.c b/src/tool_help.c
index f7ecb72199..b4dce29904 100644
--- a/src/tool_help.c
+++ b/src/tool_help.c
@@ -264,7 +264,7 @@ void tool_help(char *category)
         noflagged = TRUE;
       }
       a = findlongopt(lookup);
-      if(noflagged && (ARGTYPE(a->desc) != ARG_BOOL))
+      if(a && noflagged && (ARGTYPE(a->desc) != ARG_BOOL))
         /* a --no- prefix for a non-boolean is not specifying a proper
            option */
         a = NULL;
-- 
2.47.3