Fix NPE

Change-Id: I7dbe5705b76ba54dc0dd9bc00051406e83ed7df6
diff --git a/src/com/android/contacts/ui/EditContactActivity.java b/src/com/android/contacts/ui/EditContactActivity.java
index c70cff6..3e248ea 100644
--- a/src/com/android/contacts/ui/EditContactActivity.java
+++ b/src/com/android/contacts/ui/EditContactActivity.java
@@ -1370,6 +1370,9 @@
 
         int value;
         if (!skipAccountTypeCheck) {
+            if (oneSource.accountType == null) {
+                return 1;
+            }
             value = oneSource.accountType.compareTo(twoSource.accountType);
             if (value != 0) {
                 return value;