git: openjdk/jdk: 8292494: Ensure SystemDictionary::set_platform_loader and set_system_loader are called only once

[Calvin Cheung]

Changeset: 88af2040
Author:    Calvin Cheung <ccheung at openjdk.org>
Date:      2022-08-25 16:10:37 +0000
URL:       https://git.openjdk.org/jdk/commit/88af204027ec51d6e13516fa61e1c217a9445c62

8292494: Ensure SystemDictionary::set_platform_loader and set_system_loader are called only once

Reviewed-by: iklam, dholmes

! src/hotspot/share/classfile/systemDictionary.cpp