Reuse inflater/deflater

Author: marci4

src/main/java/org/java_websocket/extensions/permessage_deflate/PerMessageDeflateExtension.java

@@ -166,15 +166,15 @@ We can check the getRemaining() method to see whether the data we supplied has b
  Note that this behavior doesn't occur if the message is "first compressed and then fragmented".
  */
 if (inflater.getRemaining() > 0){
-inflater = newInflater(true);
+inflater.reset();
 decompress(inputFrame.getPayloadData().array(), output);
  }
 
 if (inputFrame.isFin()){
 decompress(TAIL_BYTES, output);
 // If context takeover is disabled, inflater can be reset.
 if (clientNoContextTakeover){
-inflater = newInflater(true);
+inflater.reset();
  }
  }
  } catch (DataFormatExceptione){
@@ -244,8 +244,7 @@ public void encodeFrame(Framedata inputFrame){
  }
 
 if (serverNoContextTakeover){
-deflater.end();
-deflater = newDeflater(Deflater.DEFAULT_COMPRESSION, true);
+deflater.reset();
  }
  }