Fix nfcsnoop delta_time_ms overflow am: 7bef3988d7

Original change: https://android-review.googlesource.com/c/platform/system/nfc/+/3391947

Change-Id: If993a14adb34c807acc3c109a3d1298fae5e3dcb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>