Update for #1802 - made sure we don’t get into problems when checking for self.activityIndicator on one thread and allocating on another. Also, made sure `sd_removeActivityIndicator` executes on the main queue
Update for #1802 - made sure we don’t get into problems when checking for self.activityIndicator on one thread and allocating on another. Also, made sure `sd_removeActivityIndicator` executes on the main queue

iosnatarajan/SDWebImage,dreampiggy/SDWebImage,Insfgg99x/SDWebImage,awkward/SDWebImage,iheartradio/SDWebImage,odyth/SDWebImage,zhang-yawei/SDWebImage,amyhametov/SDWebImage,tualatrix/SDWebImage,altrooz/SDWebImage,awkward/SDWebImage,Kekanto/SDWebImage,dreampiggy/SDWebImage,geoffmacd/SDWebImage,dreampiggy/SDWebImage,Frntbac/SDWebImage,rs/SDWebImage,smule/SDWebImage,awkward/SDWebImage,dpettigrew/SDWebImage