hg: jdk/sandbox: 8223532: Don't try creating IPv4 sockets in NetworkInterface.c if IPv4 is not supported

[chris.hegarty at oracle.com]

Changeset: 53d51822f287
Author:    aeubanks
Date:      2019-05-07 16:18 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/53d51822f287

8223532: Don't try creating IPv4 sockets in NetworkInterface.c if IPv4 is not supported
Reviewed-by: dfuchs, chegar
Contributed-by: aeubanks at google.com

! src/java.base/unix/native/libnet/NetworkInterface.c