Convert empty response to -1 for some SIM APIs
Earlier RILs did not send a response for some cases although the
interface expected an integer as response. Do not return error if
response is empty. Instead Return -1 in those cases to maintain backward
compatibility.
Bug:
36209518
Test: Enable fixed dialing number and call barring by dialing *35*PASSWORD#.
Check logs to make sure RILC does not fail with invalid response
on devices where RIL doesn't send a response to these requests
on success.
Change-Id: I1d91bacd60bd19985710a111de57e86f03e6ce4a