fix excel-ant tests

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1896548 13f79535-47bb-0310-9956-ffa450edef68

poi-excelant/src/main/java/org/apache/poi/ss/excelant/util/ExcelAntWorkbookUtil.java

@@ -164,7 +164,7 @@ public class ExcelAntWorkbookUtil extends Typedef {
      */
     protected FormulaEvaluator getEvaluator(String fileName) {
         FormulaEvaluator evaluator;
-        if (!fileName.endsWith(".xlsx")) {
+        if (fileName.endsWith(".xlsx")) {
             if(xlsMacroList.isEmpty()) {
                 evaluator = new XSSFFormulaEvaluator((XSSFWorkbook) workbook);
             } else {