Fix libnetworkstats_test. am: 0db496ef39 am: 02d394fcf4 am: b7fcd6d45c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1973862

Change-Id: Ic3a64943d31d8f114e6643d5c6a0bcf4afdebb4e