Fixed bug with scaling background while writing sub-8-bit grayscale images.
Fixed bug with scaling background while writing sub-8-bit grayscale images.


UniQP/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,kwm81/ImageMagick,UniQP/ImageMagick,UniQP/ImageMagick,kwm81/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick