Make android::base::Basename() safe. am: 657800047a am: bb5213a91f

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/libbase/+/18599454

Change-Id: I60d69eb74998df8664d74440fc5da2ad85d5fa83
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>