keep the caching of "record.getComment()"

Author: dota17

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

@@ -93,8 +93,9 @@ public void testCSVFile(final File testFile) throws Exception {
             try (final CSVParser parser = CSVParser.parse(new File(BASE, split[0]), Charset.defaultCharset(), format)) {
                 for (final CSVRecord record : parser) {
                     String parsed = Arrays.toString(record.values());
-                    if (checkComments && record.getComment() != null) {
-                        parsed += "#" + record.getComment().replace("\n", "\\n");
+                    String comment = record.getComment();
+                    if (checkComments && comment != null) {
+                        parsed += "#" + comment.replace("\n", "\\n");
                     }
                     final int count = record.size();
                     assertEquals(readTestData(testData), count + ":" + parsed, testFile.getName());
@@ -137,8 +138,9 @@ public void testCSVUrl(final File testFile) throws Exception {
             try (final CSVParser parser = CSVParser.parse(resource, Charset.forName("UTF-8"), format)) {
                 for (final CSVRecord record : parser) {
                     String parsed = Arrays.toString(record.values());
-                    if (checkComments && record.getComment() != null) {
-                        parsed += "#" + record.getComment().replace("\n", "\\n");
+                    String comment = record.getComment();
+                    if (checkComments && comment != null) {
+                        parsed += "#" + comment.replace("\n", "\\n");
                     }
                     final int count = record.size();
                     assertEquals(readTestData(testData), count + ":" + parsed, testFile.getName());