java.util.zip stream classes do not close default {De,In}flaters

The fix for 4499542 was backported from 1.4 to 1.3.1_04, but the backport was
incomplete. The usesDefaultDeflater field is never set, so the close() method
never invokes the underlying deflater's end() method. This causes native
memory to be retained until the deflater is finalized. Since finalization is
never guaranteed, native OutOfMemoryErrors can occur under heavy load.

This bug only exists in 1.3.1.

###@###.### 2005-1-28 20:22:26 GMT