Fix GSMPhone.getServiceState() when mSST is null.

Prevent NPE when getServiceState() is called on GSMPhone after
removeReferences() is called on it.

Bug: 11561165
Change-Id: I77c3638dc33b24711db2d8541b067e17e30255a1

parent a500ee7f

src/java/com/android/internal/telephony/gsm/GSMPhone.java

+6 −1

Original line number	Diff line number	Diff line
		@@ -255,7 +255,12 @@ public class GSMPhone extends PhoneBase {
		@Override
		public ServiceState
		getServiceState() {
		if (mSST != null) {
		return mSST.mSS;
		} else {
		// avoid potential NPE in EmergencyCallHelper during Phone switch
		return new ServiceState();
		}
		}

		@Override