https://github.com/curl/curl/commit/5caba3bd97a14b64d906ece77bc0e2b339161a1f
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 3 Apr 2025 08:49:20 +0200
Subject: [PATCH] curl_krb5: only use functions if FTP is still enabled

Reported-by: x1sc0 on github
Fixes #16925
Closes #16931
--- a/lib/curl_krb5.h
+++ b/lib/curl_krb5.h
@@ -39,7 +39,7 @@ struct Curl_sec_client_mech {
 #define AUTH_CONTINUE   1
 #define AUTH_ERROR      2
 
-#ifdef HAVE_GSSAPI
+#if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_FTP)
 void Curl_sec_conn_init(struct connectdata *);
 void Curl_sec_conn_destroy(struct connectdata *);
 int Curl_sec_read_msg(struct Curl_easy *data, struct connectdata *conn, char *,