Fix a bug in reconstrct.scale() when inner_scale > 1 && y only model
Fix a bug in reconstrct.scale() when inner_scale > 1 && y only model

nagadomi/waifu2x,zyhkz/waifu2x,nagadomi/waifu2x,zyhkz/waifu2x,Spitfire1900/upscaler,zyhkz/waifu2x,nagadomi/waifu2x,zyhkz/waifu2x,nagadomi/waifu2x,Spitfire1900/upscaler,nagadomi/waifu2x