img_pygame: Fix loading of binary alpha formats
img_pygame: Fix loading of binary alpha formats

inclement/kivy,LogicalDash/kivy,LogicalDash/kivy,inclement/kivy,Cheaterman/kivy,Cheaterman/kivy,LogicalDash/kivy,jegger/kivy,kivy/kivy,bionoid/kivy,rnixx/kivy,LogicalDash/kivy,KeyWeeUsr/kivy,manthansharma/kivy,kivy/kivy,matham/kivy,bionoid/kivy,KeyWeeUsr/kivy,manthansharma/kivy,KeyWeeUsr/kivy,jegger/kivy,jegger/kivy,akshayaurora/kivy,manthansharma/kivy,bionoid/kivy,matham/kivy,akshayaurora/kivy,kivy/kivy,matham/kivy,akshayaurora/kivy,inclement/kivy,rnixx/kivy,Cheaterman/kivy,Cheaterman/kivy,jegger/kivy,rnixx/kivy,KeyWeeUsr/kivy,manthansharma/kivy,bionoid/kivy,matham/kivy