Don't fail if _ftp_stat() reports a protocol error, since that most likely

means that the server doesn't understand SIZE or MDTM, which should not be a
hard failure.

Submitted by:	ume

lib/libfetch/ftp.c

@@ -796,6 +796,7 @@ fetchXGetFTP(struct url *url, struct url_stat *us, char *flags)
     
     /* stat file */
     if (us && _ftp_stat(cd, url->doc, us) == -1
+	&& fetchLastErrCode != FETCH_PROTO
 	&& fetchLastErrCode != FETCH_UNAVAIL)
 	return NULL;