[Coverity CID: 180698] Null pointer dereferences in /tests/bluetooth/tester/src/gatt.c

[Shilpashree3lc-zz]

Static code scan issues seen in File: /tests/bluetooth/tester/src/gatt.c
Category: Null pointer dereferences
Function: get_attrs_rp
Component: Tests
CID: 180698
Please fix or provide comments to square it off in coverity in the link: https://scan9.coverity.com/reports.htm#v32951/p12996

[nashif]

unavailable in coverity anymore.