Add back pressed behavior for EditFdn Screen.

Bug: 18938217
Change-Id: Ic6bb5f9ec4ad0014b10ba6f4ac6e67f1c1d94b05
diff --git a/src/com/android/phone/settings/fdn/EditFdnContactScreen.java b/src/com/android/phone/settings/fdn/EditFdnContactScreen.java
index 00bd9fc..a047b0b 100644
--- a/src/com/android/phone/settings/fdn/EditFdnContactScreen.java
+++ b/src/com/android/phone/settings/fdn/EditFdnContactScreen.java
@@ -208,6 +208,10 @@
             case MENU_DELETE:
                 deleteSelected();
                 return true;
+
+            case android.R.id.home:
+                onBackPressed();
+                return true;
         }
 
         return super.onOptionsItemSelected(item);