android/hal-bluetooth: Fix NULL ptr dereference
android/hal-bluetooth: Fix NULL ptr dereference

Add NULL check on malloc return to fix NULL pointer dereference
in case malloc fails.

pkarasev3/bluez,ComputeCycles/bluez,ComputeCycles/bluez,ComputeCycles/bluez,silent-snowman/bluez,silent-snowman/bluez,ComputeCycles/bluez,pkarasev3/bluez,silent-snowman/bluez,pkarasev3/bluez,pkarasev3/bluez,silent-snowman/bluez