Remove unused assignment in SkScan::AntiFillXRect.

Found by static analysis.

Change-Id: I566da96938a735d29acc854cd700fcb944bc09fc
Reviewed-on: https://skia-review.googlesource.com/8026
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed