RFR JDK-8014307

[John Zavgren]

Greetings:

Please review the following change to the file: 
jdk/src/share/native/sun/security/jgss/wrapper/GSSLibStub.c that fixes two 
memory leaks.

http://cr.openjdk.java.net/~jzavgren/8014307/webrev.01/

Thanks!
John Zavgren