GUACAMOLE-505: Merge changes fixing the behavior SQL Server version of the "selectOne" query for retrieval of user account information (the query must return at most one row).

extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/org/apache/guacamole/auth/jdbc/user/UserMapper.xml

@@ -176,8 +176,8 @@
             resultSets="users,arbitraryAttributes">
 
         SELECT
-            [guacamole_user].user_id,
-            [guacamole_user].username,
+            user_id,
+            username,
             password_hash,
             password_salt,
             password_date,
@@ -198,7 +198,6 @@
                 WHERE [guacamole_user_history].user_id = [guacamole_user].user_id
             ) AS last_active
         FROM [guacamole_user]
-        LEFT JOIN [guacamole_user_history] ON [guacamole_user_history].user_id = [guacamole_user].user_id
         WHERE
             [guacamole_user].username = #{username,jdbcType=VARCHAR};