Fix app crash while adding new user

Settings app crashes when tapping Home key while adding new user because
UserSettings#showDialog() is called after onSaveInstanceState().
To fix this issue, a dialog should not be shown after onPause().

Fixes: 68485787
Test: manual - tap Home key while adding new user

Change-Id: I2ddd119b6558927798a52c7977e6fd8137734c93

src/com/android/settings/users/UserSettings.java

@@ -450,6 +450,10 @@ public class UserSettings extends SettingsPreferenceFragment
     private void onUserCreated(int userId) {
         mAddedUserId = userId;
         mAddingUser = false;
+        if (!isResumed()) {
+            Log.w(TAG, "Cannot show dialog after onPause");
+            return;
+        }
         if (mUserManager.getUserInfo(userId).isRestricted()) {
             showDialog(DIALOG_SETUP_PROFILE);
         } else {