By construction, this WTF should never happen, since it's in an
if (nri.request.isRequest()) and by definition requests can only
be satisfied by one network at a time.
I don't think we've ever seen this particular WTF in an APR
report, which suggests that it's not happening in practice.
Test: atest FrameworksNetTests CtsNetTestCasesLegacyApi22 CtsNetTestCasesLegacyPermission22 android.net.cts.ConnectivityManagerTest
Change-Id: Icf4c7d2bb1da3c7db695cf0bcebc5806190a1677
d47c367905