Always re-read RawContacts._ID before editing.

In cases where the user hasn't selected a tab, and there is
no "All" tab present (a single RawContact), this code would
try reading details for the second tab that didn't exist.

This fixes http://b/2072410
diff --git a/src/com/android/contacts/ViewContactActivity.java b/src/com/android/contacts/ViewContactActivity.java
index 2fd22b1..da49188 100644
--- a/src/com/android/contacts/ViewContactActivity.java
+++ b/src/com/android/contacts/ViewContactActivity.java
@@ -385,10 +385,11 @@
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case MENU_ITEM_EDIT: {
-                long rawContactIdToEdit = mSelectedRawContactId;
+                final int tabIndex = mTabWidget.getCurrentTab();
+                long rawContactIdToEdit = getTabRawContactId(tabIndex);
                 if (rawContactIdToEdit == ALL_CONTACTS_ID) {
                     // If the "all" tab is selected, edit the next tab.
-                    rawContactIdToEdit = getTabRawContactId(mTabWidget.getCurrentTab() + 1);
+                    rawContactIdToEdit = getTabRawContactId(tabIndex + 1);
                 }
                 Uri rawContactUri = ContentUris.withAppendedId(RawContacts.CONTENT_URI,
                         rawContactIdToEdit);