Steps to Reproduce:
1. Deploy showcase-portlet.war to Liferay Portal
3. In both use-cases, try to upload 2 or more files, one of which is a file with zero bytes in length
If the bug is fixed, then only the valid files should appear in the Model Value. In addition, an error message should appear in the console log.
If the bug still exists, then the zero-length file will incorrectly appear in the Model Value.