Email: Fix account setup UI pop-up repeatedly

After account setup finish, the account loader will returns
previous result then start a account setup UI again.
So restart the account loader to avoid this issue.

Change-Id: I87eefd35de367379a1a501f456f97db95137e719
CRs-Fixed: 2216319
Issue: FP2P-518
(cherry picked from commit 312fa6fa158434b8cd657081d30845e720e4b319)
diff --git a/src/com/android/mail/ui/AbstractActivityController.java b/src/com/android/mail/ui/AbstractActivityController.java
index a7de33b..2347111 100644
--- a/src/com/android/mail/ui/AbstractActivityController.java
+++ b/src/com/android/mail/ui/AbstractActivityController.java
@@ -1112,7 +1112,7 @@
                 // We were waiting for the user to create an account
                 if (resultCode == Activity.RESULT_OK) {
                     // restart the loader to get the updated list of accounts
-                    mActivity.getLoaderManager().initLoader(LOADER_ACCOUNT_CURSOR, Bundle.EMPTY,
+                    mActivity.getLoaderManager().restartLoader(LOADER_ACCOUNT_CURSOR, Bundle.EMPTY,
                             mAccountCallbacks);
                 } else {
                     // The user failed to create an account, just exit the app