Fix inconsistent whitespace, and add a close call in the main method to avoid a resource-leak warning

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1575684 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xssf/extractor/XSSFEventBasedExcelExtractor.java

@@ -82,6 +82,7 @@ public class XSSFEventBasedExcelExtractor extends POIXMLTextExtractor
         POIXMLTextExtractor extractor =
             new XSSFEventBasedExcelExtractor(args[0]);
         System.out.println(extractor.getText());
+        extractor.close();
     }
 
     /**