git: openjdk/mobile: 8242480: Negative value may be returned by getFreeSwapSpaceSize() in the docker

[duke]

Changeset: f6f97ea2
Author:    Jie Fu <jiefu at openjdk.org>
Date:      2020-04-17 14:48:11 +0000
URL:       https://git.openjdk.java.net/mobile/commit/f6f97ea2

8242480: Negative value may be returned by getFreeSwapSpaceSize() in the docker

Reviewed-by: sgehwolf, dholmes

! src/jdk.management/unix/classes/com/sun/management/internal/OperatingSystemImpl.java
+ test/jdk/jdk/internal/platform/docker/GetFreeSwapSpaceSize.java
+ test/jdk/jdk/internal/platform/docker/TestGetFreeSwapSpaceSize.java