In jabswitch, main is defined as `void main()`, which requires an explicit exit call whenever an error occurs, and extra error checking code on our part. Visual C++ will automatically convert all instances of `void main()` to return 0 in all cases anyway, and there isn't anything gained from using this custom signature when the same can be achieved by simply returning the error value normally, so I propose we simply change it to the regular `int main` signature
------------- Commit messages: - jabswitch.cpp Changes: https://git.openjdk.org/jdk/pull/12650/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12650&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8302838 Stats: 6 lines in 1 file changed: 1 ins; 4 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/12650.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12650/head:pull/12650 PR: https://git.openjdk.org/jdk/pull/12650
