Prevent length underflow in NfcTag.cpp

Bug: 124940143
Test: Read Type4B Tag
Exempt-From-Owner-Approval: Old Owners are all transferred to another BU
Change-Id: Ibdab756410bf55d701875279df3e289dbc9369d6
(cherry picked from commit c7b41a96744e1ac30920991ef1b427acbcde44db)
1 file changed