Affine transformation may be incorrect

File: Pillow/src/libImaging/Geometry.c, Line: 1083, in function ImagingTransformAffine

Lines 1083 to 1084 in 2810d7c

	xo = a[2] + a[1] * 0.5 + a[0] * 0.5;
	yo = a[5] + a[4] * 0.5 + a[3] * 0.5;

The inverse matrix corresponding to array double a[6] should be used for the computation.