Removing trailing space on empty line in OAuth controller

lib/pleroma/web/o_auth/o_auth_controller.ex

@@ -599,7 +599,7 @@ def login(%User{} = user, %App{} = app, requested_scopes) when is_list(requested
       {:ok, token}
     end
   end
-  
+
   defp redirect_uri(%Plug.Conn{}, redirect_uri), do: redirect_uri
 
   defp get_session_registration_id(%Plug.Conn{} = conn), do: get_session(conn, :registration_id)