ftp: prevent double free() in error path

Reported by bentley@; ok bentley@ jca@

diff --git a/usr.bin/ftp/fetch.c b/usr.bin/ftp/fetch.c
index c5b1d18..4b8b6d5 100644 (file)
--- a/usr.bin/ftp/fetch.c
+++ b/usr.bin/ftp/fetch.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: fetch.c,v 1.201 2021/02/16 16:27:34 naddy Exp $       */
+/*     $OpenBSD: fetch.c,v 1.202 2021/02/25 20:51:55 naddy Exp $       */
 /*     $NetBSD: fetch.c,v 1.14 1997/08/18 10:20:20 lukem Exp $ */
 
 /*-
@@ -1002,6 +1002,7 @@ noslash:
                }
        }
        free(buf);
+       buf = NULL;
 
        /* Content-Length should be ignored for Transfer-Encoding: chunked */
        if (chunked)