Merge "Remove recursive rule variable reference" into main am: 0de0275703 am: be062a6e0c

Original change: https://android-review.googlesource.com/c/platform/external/clang/+/2901157

Change-Id: I4fc24d030cd2ce90326efd0a7a05fa1834c095df
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>