Small fix to align the implementation of JNI function IsSameObject with the implementation of `if_acmp<cond>` in the rest of the JVM.
Tested locally. Fred ------------- Commit messages: - Add support for the alrternate substitutability method Changes: https://git.openjdk.org/valhalla/pull/1905/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1905&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8375328 Stats: 11 lines in 2 files changed: 10 ins; 0 del; 1 mod Patch: https://git.openjdk.org/valhalla/pull/1905.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1905/head:pull/1905 PR: https://git.openjdk.org/valhalla/pull/1905
