Phone process crashes during the stability test.

[Description]
During a stability test, a NPE was thrown during a call.

[Root cause]
The method Connection.getAddress() might return null.

[Solution]
Add safe check before using Connection.getAddress().

Fixes: 145146245
Test: Run Telephony unit tests
Change-Id: Ia576bc0958811c8b38697869c594c70b0be0c2f3
2 files changed