libril: Fix KW issues

Fix KW issues.
Import of partner CL 558663.

Change-Id: I1eb552980648decae0f775fec4006438ea5f4f3d
diff --git a/libril/RilSapSocket.cpp b/libril/RilSapSocket.cpp
index 19457f4..709324a 100644
--- a/libril/RilSapSocket.cpp
+++ b/libril/RilSapSocket.cpp
@@ -85,7 +85,9 @@
        const void *data,
        size_t datalen) {
     RilSapSocket *sap_socket = getSocketById(RIL_SOCKET_1);
-    sap_socket->onUnsolicitedResponse(unsolResponse, (void *)data, datalen);
+    if(sap_socket){
+        sap_socket->onUnsolicitedResponse(unsolResponse, (void *)data, datalen);
+    }
 }
 #endif