Fix an NPE found during CTS testing with setCallerInfo

No flag used here because this is an NPE only fix only
reported during CTS testing and can be included in QPR2

Fixes: 300736546
Test: atest CtsTelecomTestCases
Change-Id: Icd2f74a24c9d5760dcc653c5dc995f6973bdeee6
1 file changed