Block executed twice in for...loop

Hi Jake,

I'm using your wonderful work in my project and have some issue (question). 
In wi-fi , _foundNetworks method you have "for loop" for inserting new cells.
I've noticed that block executed twice for one full loop. That mean, the network names generated twice (when using debug log within a block). Why so? Shouldn't it be one time per loop?
Thank you for help. 
