Return the contour's final point from SkPath::RangeIter in kClose

This point is located at fPoints[-1]. We might as well provide it
since it's free, and the stroke iterators for indirect tessellation
will be able to use it.

Bug: skia:10419
Change-Id: If0161a18a9a5a0f3b118a99d7c090d79d424f9db
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337637
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
diff --git a/gn/tests.gni b/gn/tests.gni
index 11a5138..691d901 100644
--- a/gn/tests.gni
+++ b/gn/tests.gni
@@ -259,6 +259,7 @@
   "$_tests/SkGlyphTest.cpp",
   "$_tests/SkImageTest.cpp",
   "$_tests/SkNxTest.cpp",
+  "$_tests/SkPathRangeIterTest.cpp",
   "$_tests/SkRasterPipelineTest.cpp",
   "$_tests/SkRemoteGlyphCacheTest.cpp",
   "$_tests/SkResourceCacheTest.cpp",