Simple change to `make/autoconf/toolchain.m4` to fix the bug as described in its title and description.
------------- Commit messages: - Update copyright - Ignore the error output of xcodebuild when checking its version Changes: https://git.openjdk.java.net/jdk18/pull/95/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk18&pr=95&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8279702 Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk18/pull/95.diff Fetch: git fetch https://git.openjdk.java.net/jdk18 pull/95/head:pull/95 PR: https://git.openjdk.java.net/jdk18/pull/95
