Apply suggestions from code review

Valery Kharseko

yesterday 6f5f5e77ef25e4d4951b1cf16a7300ff19ea16b8

 opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java

@@ -1015,6 +1015,27 @@
      Attribute modifiedAttribute = mod.getAttribute();
      if (modifiedAttribute != null && !modifiedAttribute.isEmpty())
      {
        // Only enforce referential integrity on attributes that this plugin is configured to manage.
        final AttributeType modifiedAttrType = modifiedAttribute.getAttributeType();
        boolean isManagedAttributeType = false;
        if (modifiedAttrType != null && attributeTypes != null)
        {
          for (AttributeType configuredType : attributeTypes)
          {
            if (modifiedAttrType.equals(configuredType)
                || modifiedAttrType.isSubTypeOf(configuredType))
            {
              isManagedAttributeType = true;
              break;
            }
          }
        }

        if (!isManagedAttributeType)
        {
          // Skip integrity checks for attributes not configured for this plugin.
          continue;
        }
        PluginResult.PreOperation result =
            isIntegrityMaintained(modifiedAttribute, entryDN, entryBaseDN);
        if (result.getResultCode() != ResultCode.SUCCESS)