Improved syntax on login completion handler.
Improved syntax on login completion handler.

hbucius/FunctionalReactivePixels,fxd/FunctionalReactivePixels,LiuShulong/FunctionalReactivePixels,SilenceZhou/FunctionalReactivePixels,ManagerOrganization/FunctionalReactivePixels,sandyway/FunctionalReactivePixels,ashfurrow/FunctionalReactivePixels,RiuHDuo/FunctionalReactivePixels