Checkstyle: '+' should be on the previous line.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1602907 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -320,8 +320,8 @@ private CSVFormat(final char delimiter, final Character quoteChar,
             Set<String> dupCheck = new HashSet<String>();
             for (String hdr : header) {
                 if (!dupCheck.add(hdr)) {
-                    throw new IllegalArgumentException("The header contains a duplicate entry: '" + hdr + "' in "
-                            + Arrays.toString(header));
+                    throw new IllegalArgumentException("The header contains a duplicate entry: '" + hdr + "' in " +
+                            Arrays.toString(header));
                 }
             }
             this.header = header.clone();