Created by: ZUUL42
Sets Werror for ML in the GC 7.2.0 PR build.
Motivation and Context
This is work toward #3178, setting -Werror for all packages.
Allowed by work from Issue #4512 (closed) & PR #4625.
My commit messages mention the appropriate GitHub issue numbers.
My code follows the code style of the affected package(s).
All new and existing tests passed.
No new compiler warnings were introduced.