Fix that WebP (including Animated WebP) decoding issue on iOS 12. Using the correct bitmapInfo to avoid `CGImageCreate` failed when the WebP image contains no alpha channel
Fix that WebP (including Animated WebP) decoding issue on iOS 12. Using the correct bitmapInfo to avoid `CGImageCreate` failed when the WebP image contains no alpha channel

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