Fixing crash in PhoneNumberUtils getNumberFromIntent

Handling intent with no data when trying to retrieve number from
intent.

Change-Id: If7c5930e7048aec732fb7a3fbeb3391e1408b071

telephony/java/android/telephony/PhoneNumberUtils.java

@@ -152,6 +152,11 @@ public class PhoneNumberUtils
         String number = null;
 
         Uri uri = intent.getData();
+
+        if (uri == null) {
+            return null;
+        }
+
         String scheme = uri.getScheme();
 
         if (scheme.equals("tel") || scheme.equals("sip")) {