ftp: add missing brackets for IPv6 literals

modules/access/ftp.c

@@ -979,7 +979,11 @@ static int DirRead (stream_t *p_access, input_item_node_t *p_current_node)
             vlc_memstream_putc(&ms, 's');
         }
         vlc_memstream_puts(&ms, "://");
-        vlc_memstream_puts(&ms, p_sys->url.psz_host);
+
+        if (strchr(p_sys->url.psz_host, ':') != NULL)
+            vlc_memstream_printf(&ms, "[%s]", p_sys->url.psz_host);
+        else
+            vlc_memstream_puts(&ms, p_sys->url.psz_host);
 
         if (p_sys->url.i_port != ((p_sys->tlsmode != IMPLICIT) ? IPPORT_FTP
                                                                : IPPORT_FTPS))