SnappyOutputStream.close() throws an exception if already closed

[jn1]

The close() method calls flush() before checking whether the stream is already closed. If the stream is closed, flush() fails with an exception. I suggest enclosing the entire method in the "if (!closed)" check as follows:

@Override
public void close()
        throws IOException
{
    if (!closed) {
        try {
            flush();
            out.close();
        }
        finally {
            closed = true;
            recycler.releaseOutputBuffer(outputBuffer);
            recycler.releaseEncodeBuffer(buffer);
        }
    }
}

[electrum]

Fixed. Thanks for finding this bug!