Fixed transparency issue with 16-bit tga files.
Fixed transparency issue with 16-bit tga files.

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