It's more concise and I suspect Kotlin's implementation is better than
Java's, as it seems to take available() into account.
Signed-off-by: Graham <gpe@openrs2.org>
Excluding the 0xFF trailers, the first block is actually 512 bytes, and
the remaining blocks are all 511 bytes. I had mistakenly written the
code and tests on the basis of all blocks being 511 bytes.
The Js5ResponseDecoder now works with OSRS.
Signed-off-by: Graham <gpe@openrs2.org>