Assigning current call state to mCallState right before registering PhoneStateListener so that the preferences have correct state before first onCallStateChanged() by initial registration even. Bug: 166307650 Test: Check the preferences state when onStop() -> onStart() Change-Id: I861a687497ba4da7a845540fd92ae2b865392d60 Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>