This PR proposes to remove an old optimization check that was incorrect making `AbstractMemorySegmentImpl::mismatch` always return `-1` if the source and destination segment are the same (disregarding offsets).
------------- Commit messages: - Remove comment out markings - Remove erroneous check Changes: https://git.openjdk.org/jdk/pull/18426/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18426&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8323552 Stats: 34 lines in 2 files changed: 27 ins; 4 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/18426.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/18426/head:pull/18426 PR: https://git.openjdk.org/jdk/pull/18426
