add max limit for searches

ftp.go

@@ -1096,7 +1096,7 @@ func (c *ServerConn) Walk(root string) *Walker {
 
 // Search returns all the directories matching the search pattern
 func (c *ServerConn) Search(pattern string) ([]string, error) {
-	_, message, err := c.cmd(StatusCommandOK, "SITE SEARCH %s", pattern)
+	_, message, err := c.cmd(StatusCommandOK, "SITE SEARCH %s --LIMIT 50000", pattern)
 	if err != nil {
 		return nil, err
 	}