Bug in the code for JDBCUserProvider

I am trying to use the Custom User Integration for users by using the JDBCUserProvider. The username, name ,email columns are overwriten by the following properties.

usernameField = user_name

nameField = first_name

emailField = cl_email

The code has a bug which prevents it finding the user from custom DB column names. Below is the corrected code from JDBCUserProvider findUsers method.

StringBuilder sql = new StringBuilder(90);
            sql.append(searchSQL);
            boolean first = true;
            if (fields.contains("Username")) {
                sql.append(" ").append(usernameField).append(" LIKE ?");
                queries++;
                first = false;
            }
            if (fields.contains("Name")) {
                if (!first) {
                    sql.append(" AND");
                }
                sql.append(" ").append(nameField).append(" LIKE ?");
                queries++;
                first = false;
            }
            if (fields.contains("Email")) {
                if (!first) {
                    sql.append(" AND");
                }
                sql.append(" ").append(emailField).append(" LIKE ?");
                queries++;
            }

Thanks,

vinay