fix: 修复一个错误

nflg-mobilebroken-repository/src/main/resources/mapper/DictionaryItemMapper.xml

@@ -10,7 +10,7 @@
     </select>
 
     <select id="getListByDictionaryCode" resultType="com.nflg.mobilebroken.repository.entity.DictionaryItem">
-        SELECT ifnull(dit.value,di.`name`) as 'name',di.*
+        SELECT fun_isBlank(dit.value,di.`name`) as 'name',di.*
         FROM dictionary d
                  INNER JOIN dictionary_item di ON d.id=di.dictionary_id
             LEFT JOIN dictionary_item_translate dit ON dit.dictionary_item_id=di.id and dit.language_code=#{language}