[Pixman] pixman hangs in affine-test

[Siarhei Siamashka]

Hello,

$ test/affine-test 212944861
src_fmt=20028888, dst_fmt=20028888
op=3, scale_x=-6077, scale_y=-148221, repeat=1
translate_x=105371, translate_y=105371
src_width=16, src_height=12, dst_width=7, dst_height=2
src_x=-3, src_y=-3, dst_x=0, dst_y=0
w=6, h=2

This still needs a separate testcase for the test suite and a bugfix.

-- 
Best regards,
Siarhei Siamashka