org.jline.util.PumpReader signed byte problem

SonarCloud reports a problem in PumpReader here:
 https://github.com/openjdk/jdk/blob/354c6605e32790ca421869636d8bf5456fc51717/src/jdk.internal.le/share/classes/jdk/internal/org/jline/utils/PumpReader.java#L417

        @Override
        public int read() throws IOException {
            if (!buffer.hasRemaining() && !readUsingBuffer()) {
                return EOF;
            }
            return buffer.get(); // <---- here
        }

InputStream returns -1 as EOF, but that might be as well the value of signed byte from get(). We need cast to `& 0xFF` here.