[CSV-130] CSVFormat#withHeader doesn't work well with #printComment, add withHeaderComments(String...). Adjust test for style.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1623985 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/test/java/org/apache/commons/csv/CSVPrinterTest.java

@@ -517,9 +517,9 @@ public void testHeaderCommentTdf() throws IOException {
         csvPrinter.close();
     }
 
-    private CSVPrinter printWithHeaderComments(final StringWriter sw, Date now, CSVFormat format)
+    private CSVPrinter printWithHeaderComments(final StringWriter sw, Date now, CSVFormat baseFormat)
             throws IOException {
-        format = format.withCommentMarker('#').withHeader("Col1", "Col2");
+        CSVFormat format = baseFormat.withCommentMarker('#').withHeader("Col1", "Col2");
         format = format.withHeaderComments("Generated by Apache Commons CSV 1.1", now);
         final CSVPrinter csvPrinter = format.print(sw);
         csvPrinter.printRecord("A", "B");