git: openjdk/jdk15u-dev: 8257746: Regression introduced with JDK-8250984 - memory might be null in some machines

[Ekaterina Vergizova]

Changeset: 0be19d28
Author:    Ekaterina Vergizova <evergizova at openjdk.org>
Date:      2021-05-13 12:52:53 +0000
URL:       https://git.openjdk.java.net/jdk15u-dev/commit/0be19d285688c5c39f7535c0af5332fb7c672079

8257746: Regression introduced with JDK-8250984 - memory might be null in some machines

Backport-of: abc4300de9c7a298c359fb585d3b0570a98df5cb

! src/java.base/linux/classes/jdk/internal/platform/cgroupv1/CgroupV1Subsystem.java