git: openjdk/jdk17: 8269543: The warning for System::setSecurityManager should only appear once for each caller

[Weijun Wang]

Changeset: c4ea13ed
Author:    Weijun Wang <weijun at openjdk.org>
Date:      2021-07-02 14:31:50 +0000
URL:       https://git.openjdk.java.net/jdk17/commit/c4ea13edd036bd6aeb213bb5391dd374d283d382

8269543: The warning for System::setSecurityManager should only appear once for each caller

Reviewed-by: lancea, alanb, dfuchs

! src/java.base/share/classes/java/lang/System.java
! test/jdk/java/lang/System/SecurityManagerWarnings.java