Windowsize should be in the range 8..15

[riyafa]

According to zlib manual:

The windowBits parameter is the base two logarithm of the window size (the size of the history buffer). It should be in the range 8..15 for this version of the library.

However jzlib supports only in the range 9..15 as in this line:

jzlib/src/main/java/com/jcraft/jzlib/Deflater.java

Lines 109 to 111 in a21be20

	if(bits < 9 || bits > 15){
	return Z_STREAM_ERROR;
	}

If windowbit is 8 it returns an error which is incorrect.