nfc_rw_fuzzer: Tag-mismatch in rw_t4t_data_cback

In rw_t4t_sm_detect_ndef of rw_t4t.cc, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote information disclosure due to a limited change in behavior based on the out of bounds data with no additional execution privileges needed. User interaction is not needed for exploitation.