git: openjdk/jdk: master: 8357919: Arena::allocate returns segments with address zero if the segment length is zero after JDK-8345687

[Per Minborg]

Changeset: 0671309d
Branch: master
Author:    Per Minborg <pminborg at openjdk.org>
Date:      2025-05-28 10:57:57 +0000
URL:       https://git.openjdk.org/jdk/commit/0671309de530822cc261e8251fc425c8aa3cc487

8357919: Arena::allocate returns segments with address zero if the segment length is zero after JDK-8345687

Reviewed-by: mcimadamore

! src/java.base/share/classes/jdk/internal/foreign/SegmentFactories.java
! test/jdk/java/foreign/TestSegments.java