Add missing @OverRide.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1625457 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

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

@@ -435,6 +435,7 @@ private boolean isMetaChar(final int ch) {
      * @throws IOException
      *             If an I/O error occurs
      */
+    @Override
     public void close() throws IOException {
         reader.close();
     }