Fix NPE in onHandleIntent

Catch null intents.

Bug:18579403
Change-Id: I4ee3baf97c8767f0b166f122c13f8abab3a75a4f
diff --git a/src/com/android/contacts/ContactSaveService.java b/src/com/android/contacts/ContactSaveService.java
index 02a2471..7d355cd 100644
--- a/src/com/android/contacts/ContactSaveService.java
+++ b/src/com/android/contacts/ContactSaveService.java
@@ -182,6 +182,10 @@
 
     @Override
     protected void onHandleIntent(Intent intent) {
+        if (intent == null) {
+            Log.d(TAG, "onHandleIntent: could not handle null intent");
+            return;
+        }
         // Call an appropriate method. If we're sure it affects how incoming phone calls are
         // handled, then notify the fact to in-call screen.
         String action = intent.getAction();