IO-356 Fix failures in testIO_356_Loop_UTF16 and testIO_356_Loop_UTF8

Reset the byte buffer and the encoder together

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1470353 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/main/java/org/apache/commons/io/input/CharSequenceInputStream.java

@@ -210,6 +210,8 @@ public synchronized void reset() throws IOException {
         if (this.mark != NO_MARK) {
             this.cbuf.position(this.mark);
             this.mark = NO_MARK;
+            this.bbuf.limit(0);
+            this.encoder.reset();
         }
     }