hg: jdk/jdk: 8236582: (fc) FileChannel.map fails with InternalError when security manager enabled

[brian.burkhalter at oracle.com]

Changeset: eebc43ef911c
Author:    bpb
Date:      2020-01-08 08:35 -0800
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/eebc43ef911c

8236582: (fc) FileChannel.map fails with InternalError when security manager enabled
Reviewed-by: alanb

! src/java.base/share/classes/jdk/internal/misc/ExtendedMapMode.java
+ test/jdk/java/nio/channels/FileChannel/MapWithSecurityManager.java