Fixed incorrectly cleared pointer to mask when setting fillshape to pattern.
Fixed incorrectly cleared pointer to mask when setting fillshape to pattern.

darcs-hash:20080321194509-86a4e-8e94640b81aef14a1754bb98d0a4bb3d39d73434.gz

nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf