短验校验，redis key 增加租户逻辑判断2

src/main/java/cn/quantgroup/xyqb/service/sms/impl/SmsServiceImpl.java

@@ -91,7 +91,7 @@ public class SmsServiceImpl implements ISmsService {
         }
         SessionStruct sessionStruct = XyqbSessionContextHolder.getXSession();
         String key = Constants.REDIS_PREFIX_VERIFICATION_CODE + phoneNo;
-        if (!UserConstant.defaultTenantId.equals(sessionStruct.getTenantId())) {
+        if (sessionStruct != null && !UserConstant.defaultTenantId.equals(sessionStruct.getTenantId())) {
             key = Constants.REDIS_PREFIX_VERIFICATION_CODE + sessionStruct.getTenantId() + "_" + phoneNo;
         }
         String randomCode = stringRedisTemplate.opsForValue().get(key);