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

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

Change-Id: I0ce455eba479b436dc5f704919112ac3ef965c4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>