Fix a typo in oat_file_assistant_context.h. am: 6466a588e3

Original change: https://android-review.googlesource.com/c/platform/art/+/2203778

Change-Id: Icfba30fe1705bbd3c6c0fabb9efa6af554b1ef8a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>