Ensure mForwardNumber is null if modem returns empty String or null
We populate EXTRA_FORWARDED_NUMBER if mForwardedNumber is non null.
This was happening on some hardware where DriverCall#forwardedNumber
was an empty String instead of null. In either case, we should
set mForwardedNumber to null.
Test: atest FrameworkTelephonyTests:GsmCdmaConnectionTest
(cherry picked from commit a68707ee8c89fde33af13fbb7bce48802f11cdb0)
2 files changed