MapSpec #addLayer fix test

[sonic16x]

Hi. We use this tests for our code and have one problem. If layers is a lot of then .removeLayer
hasn't time to remove the layer and spy is called. We can use event 'layerremove' for this. Thanks.

[IvanSanchez]

Attaching the event should be done before calling removeLayer. As it is now, removing the layer will fire an event that won't trigger any event handler.

I'm afraid to say I don't think your changes add any functionality to Leaflet 😞 - that unit test is about layeradd, not about layerremove.

[sonic16x]

@IvanSanchez , I'm understood. Sorry ))

[IvanSanchez]

@scherebedov No problem 😄