prevent multiple map-updates (#1817)
prevent multiple map-updates (#1817)

* prevent multiple map-updates

In case a map-update took longer than 5s, multiple updates were started, this is a simple fix so there is always only one map-update running

* updated formatting

* updated formatting ^2

creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map