[RILMODEM] PB crash fix

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[RILMODEM] PB crash fix add logging

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
Merge pull request #241 from jpoutiai/master

[RILMODEM] PB crash fix