Copy input byte array to prevent subsequent external changes

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@674294 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/java/org/apache/commons/codec/binary/Base64.java

@@ -221,7 +221,8 @@ public Base64(int lineLength) {
      */
     public Base64(int lineLength, byte[] lineSeparator) {
         this.lineLength = lineLength;
-        this.lineSeparator = lineSeparator;
+        this.lineSeparator = new byte[lineSeparator.length];
+        System.arraycopy(lineSeparator, 0, this.lineSeparator, 0, lineSeparator.length);
         if (lineLength > 0) {
             this.encodeSize = 4 + lineSeparator.length;
         } else {