SL-20308 Clearing user's data should clear mfa #2

indra/newview/llfloaterforgetuser.cpp

@@ -164,6 +164,12 @@ bool LLFloaterForgetUser::onConfirmLogout(const LLSD& notification, const LLSD&
     if (option == 0)
     {
         // Remove creds
+        std::string grid_id = LLGridManager::getInstance()->getGridId(grid);
+        if (grid_id.empty())
+        {
+            grid_id = grid;
+        }
+        gSecAPIHandler->removeFromProtectedMap("mfa_hash", grid_id, LLStartUp::getUserId()); // doesn't write
         gSecAPIHandler->removeFromCredentialMap("login_list", grid, LLStartUp::getUserId());
 
         LLPointer<LLCredential> cred = gSecAPIHandler->loadCredential(grid);