Merge pull request #243 from jpoutiai/master

[RILMODEM] return failure to manufacturer and model queries
[RILMODEM] fix phonebook memory leaks

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>
[RILMODEM] fix memory leak in sms sca query

Signed-off-by: Jarko Poutiainen <Jarko.Poutiainen@oss.tieto.com>