WifiServiceImpl: Don't capture callinguid from lambda

When the lambda is run, it is inside wifi thread, so getCallingUid
returns 1000.

Bug: 178824384
Test: Manaual CtsVerifier test run.
Test: atest com.android.server.wifi (Existing unit test can't capture
this bug because the threading model is different in the test
environment)

Change-Id: I9d273fa460d27f68e613e1e7a6ae7c78be9ed50c
2 files changed