ADDITIONAL SYSTEM INFORMATION :
all version

A DESCRIPTION OF THE PROBLEM :
old Version in com/sun/org/apache/bcel/internal/classfile/Utility.java
new Version in java.xml/com/sun/org/apache/bcel/internal/classfile/Utility.java

function `public static String encode(byte[] bytes, boolean compress) throws IOException {`
if compress is true.
after jdk jdk1.8.0_251
code is
```
if (compress) {
            try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    GZIPOutputStream gos = new GZIPOutputStream(baos)) {
                gos.write(bytes, 0, bytes.length);
                bytes = baos.toByteArray();
            }
        }
```
gos forget to close,and `bytes = baos.toByteArray();` doesn't work .

so if I called encode and parament compress is true after jdk1.8.0_251,In doesn't work


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
String classname = Utility.encode(bytecode,true); and

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
real compressed BCEL code
ACTUAL -
result always $l$8b$I$A$A$A$A$A$A$A

---------- BEGIN SOURCE ----------
if (compress) {
            try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    GZIPOutputStream gos = new GZIPOutputStream(baos)) {
                gos.write(bytes, 0, bytes.length);
                gos.close();
                bytes = baos.toByteArray();
            }
        }
---------- END SOURCE ----------

FREQUENCY : always