Resend NITZ when the upstream client is not ready

When the upstream client android RILJ is not ready, NITZ time data
must be saved and resend when the connection is established.

b/34856813

Change-Id: I468918ac807674b3ae0cbfbb1757a65ac79b20e4
Signed-off-by: Weilun Du <wdu@google.com>
diff --git a/libril/ril_service.cpp b/libril/ril_service.cpp
index f1ff55a..b0ecb45 100644
--- a/libril/ril_service.cpp
+++ b/libril/ril_service.cpp
@@ -1471,6 +1471,7 @@
         radioService[slotId]->checkReturnStatus(retStatus);
     } else {
         RLOGE("radio::nitzTimeReceivedInd: radioService[%d]->mRadioIndication == NULL", slotId);
+        return -1;
     }
 
     return 0;