Correct a small mistake in SkPath::build_arc_conics
In this function, when count is 0, it maps the dst point to start, where
it should really be stop. A test case is also added.
In the test case, it should be drawing three lines, without the change in
SkPath class, it will draw 2 lines only with the top horizontal line
missing because it maps the dst point to the start point, and hence
the horizontal line is not drawn.
BUG=640031
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2409983004
Review-Url: https://chromiumcodereview.appspot.com/2409983004
2 files changed