Make Utf8ByteBufCharsetDecoder#ensureCapacity protected

Author: slandelle

netty-utils/src/main/java/org/asynchttpclient/netty/util/Utf8ByteBufCharsetDecoder.java

@@ -93,7 +93,7 @@ protected CharBuffer allocateCharBuffer(int l) {
  return CharBuffer.allocate(l);
  }
 
- private void ensureCapacity(int l) {
+ protected void ensureCapacity(int l) {
  if (charBuffer.position() == 0) {
  if (charBuffer.capacity() < l) {
  charBuffer = allocateCharBuffer(l);