Add a test for crbug 613918 and fix a style issue.

src/core/SkPath.cpp

Index: src/core/SkPath.cpp
diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index 5cd6316c7ff3556e8aad71efd11785f642f6372a..5819537c6c0737b5e57f8bcf8615ec7f0454d4f3 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -2813,7 +2813,7 @@ static int winding_mono_cubic(const SkPoint pts[], SkScalar x, SkScalar y, int*
     // compute the actual x(t) value
     SkScalar t;
     if (!SkCubicClipper::ChopMonoAtY(pts, y, &t)) {
-      return 0;
+        return 0;
     }
     SkScalar xt = eval_cubic_pts(pts[0].fX, pts[1].fX, pts[2].fX, pts[3].fX, t);
     if (SkScalarNearlyEqual(xt, x)) {
@@ -3052,7 +3052,7 @@ static void tangent_cubic(const SkPoint pts[], SkScalar x, SkScalar y,
         SkPoint* c = &dst[i * 3];
         SkScalar t;
         if (!SkCubicClipper::ChopMonoAtY(c, y, &t)) {
-          continue;
+            continue;
         }
         SkScalar xt = eval_cubic_pts(c[0].fX, c[1].fX, c[2].fX, c[3].fX, t);
         if (!SkScalarNearlyEqual(x, xt)) {