hg: jdk/jdk: 8212217: JGSS: Don't dispose() of creds too eagerly

[weijun.wang at oracle.com]

Changeset: cb06c2248720
Author:    weijun
Date:      2018-11-01 22:41 +0800
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/cb06c2248720

8212217: JGSS: Don't dispose() of creds too eagerly
Reviewed-by: mullan, weijun
Contributed-by: Nico Williams <nico at twosigma.com>

! src/java.security.jgss/share/classes/sun/security/jgss/wrapper/NativeGSSContext.java