Handle mnc 00 while retrieving the Resources based on subid

Since mnc 00 is represented as undefined it needs to be replaced
with MNC_ZERO 0xffff for retrieving proper resources.

bug:28219719
Change-Id: I7e1630c2f5c31959306d862b10e7987bb449ea9f

telephony/java/android/telephony/SubscriptionManager.java

@@ -1347,6 +1347,7 @@ public class SubscriptionManager {
         if (subInfo != null) {
             newConfig.mcc = subInfo.getMcc();
             newConfig.mnc = subInfo.getMnc();
+            if (newConfig.mnc == 0) newConfig.mnc = Configuration.MNC_ZERO;
         }
         DisplayMetrics metrics = context.getResources().getDisplayMetrics();
         DisplayMetrics newMetrics = new DisplayMetrics();