git: openjdk/jdk: 8260262: Use common code in function unmap_shared() in perfMemory_posix.cpp

[Harold Seigel]

Changeset: 2b05fae1
Author:    Harold Seigel <hseigel at openjdk.org>
Date:      2021-08-10 12:17:08 +0000
URL:       https://git.openjdk.java.net/jdk/commit/2b05fae15568d5eb91d6d6d32c29f2fda453a8f5

8260262: Use common code in function unmap_shared() in perfMemory_posix.cpp

Reviewed-by: stuefe, coleenp

! src/hotspot/os/posix/perfMemory_posix.cpp