rem: return nalpha;
add: return nalpha; }
context: tga_alphabits(TGAImageSpec &imagespec){	uint8 nalpha;	if (imagespec.depth == 32)		// Some programs that generate 32-bit TGA files 		// have an alpha channel, but have an incorrect		// descriptor which says there are no alpha bits.		// This logic is so that the alpha data can be		// obtained from TGA files that lie.		nalpha = 8;	else		nalpha = imagespec.descriptor & TGA_DESC_ALPHABITS;			return nalpha;}