[Pixman] [PATCH v13 13/14] pixman-image: Implement PIXMAN_FILTER_GOOD/BEST as separable convolutions

[Bill Spitzak]

I believe on the good/best patch you are worried about the freeing of 
the filter array. However in commit 756b54f6 you made pixman_set_filter 
always copy the one provided by the caller. This means my code works 
because the filter cannot be changed away from/to good/best without also 
freeing the previous data.

The commit just says "Add boolean returns to various setters" so I am 
wondering if this is a mistake. There is also a comparison of the 
old/new pointers which won't work if the filter array is copied.