BQR: Log error instead of crash if event too short

When the Bluetooth Quality Report Event came too short the process
crashed. As per current implementation there is a possibility
that a BQR event is shorter, because not all controllers' vendors
extended the BQR event. A temporary solution is to only print
the error and return.

Bug: 293849013
Test: m libbtif-core
Test: manual - check BQR event logs
Change-Id: Iab7ec1f83135ddf8d517bbe919d3c9df1648885a