Fix the issue that prefetcher will cause stack overflow is the input urls list is huge because of recursion function call
Fix the issue that prefetcher will cause stack overflow is the input urls list is huge because of recursion function call

awkward/SDWebImage,awkward/SDWebImage,awkward/SDWebImage,Insfgg99x/SDWebImage,smule/SDWebImage,rs/SDWebImage,iheartradio/SDWebImage,dreampiggy/SDWebImage,tualatrix/SDWebImage,zhang-yawei/SDWebImage,dreampiggy/SDWebImage,dreampiggy/SDWebImage