content ivar can be final.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1459444 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

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

@@ -52,7 +52,7 @@ enum Type {
     Token.Type type = INVALID;
 
     /** The content buffer. */
-    StringBuilder content = new StringBuilder(INITIAL_TOKEN_LENGTH);
+    final StringBuilder content = new StringBuilder(INITIAL_TOKEN_LENGTH);
 
     /** Token ready flag: indicates a valid token with content (ready for the parser). */
     boolean isReady;