Fix a bug related to connection caching which could cause a crash after

a STAT command.

PR:		kern/153748 (different patch)
Submitted by:	Mark Johnston <markjdb@gmail.com>
MFC after:	2 weeks

lib/libfetch/ftp.c

@@ -1132,6 +1132,7 @@ ftp_request(struct url *url, const char *op, struct url_stat *us,
 
 	/* just a stat */
 	if (strcmp(op, "STAT") == 0) {
+		--conn->ref;
 		ftp_disconnect(conn);
 		return (FILE *)1; /* bogus return value */
 	}