checkstyle: Variable 'padding' must be private and have accessor methods

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1456654 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/fileupload/util/mime/Base64Decoder.java b/src/main/java/org/apache/commons/fileupload/util/mime/Base64Decoder.java
index 387bf76..dbc7934 100644
--- a/src/main/java/org/apache/commons/fileupload/util/mime/Base64Decoder.java
+++ b/src/main/java/org/apache/commons/fileupload/util/mime/Base64Decoder.java
@@ -39,7 +39,7 @@
         (byte) '+', (byte) '/'
     };
 
-    protected byte    padding = (byte) '=';
+    private byte padding = (byte) '=';
 
     /*
      * set up the decoding table.