Method cleanup

AndroidAsync/src/com/koushikdutta/async/Util.java:74–79

()

        final WritableCallback cb = new WritableCallback() {
            int totalRead = 0;
            private void cleanup() {
                ds.setClosedCallback(null);
                ds.setWriteableCallback(null);
                pending.recycle();
                StreamUtility.closeQuietly(is);
            }
            ByteBufferList pending = new ByteBufferList();
            Allocator allocator = new Allocator().setMinAlloc((int)Math.min(2 << 19, max));