[automerger skipped] libprocessgroup: optimize SetAttributeAction::ExecuteForProcess performance am: 961c01ce -s ours

am skip reason: Merged-In I02e3046bd85d0dfebc68ab444f1796bb54cc69c7 with SHA-1 3483798f is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/24235345



Change-Id: I26ca0983ef7e576c8f4cc7ad5123d5d5aa565389
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>