Force SkPath::getConvexity() cache for thread safety.

src/core/SkLiteDL.cpp

Index: src/core/SkLiteDL.cpp
diff --git a/src/core/SkLiteDL.cpp b/src/core/SkLiteDL.cpp
index fee6de385c7e84cbcd6716e0c4688fc34981dafd..b88f7bc62c41a45ed26b64867f8dbc1dd2c092c2 100644
--- a/src/core/SkLiteDL.cpp
+++ b/src/core/SkLiteDL.cpp
@@ -43,7 +43,10 @@ static D* pod(T* op, size_t offset = 0) {
 
 // Pre-cache lazy non-threadsafe fields on SkPath and/or SkMatrix.
 static void make_threadsafe(SkPath* path, SkMatrix* matrix) {
-    if (path)   { path->updateBoundsCache(); }
+    if (path) {
+        path->updateBoundsCache();
+        (void)path->getConvexity();
+    }
     if (matrix) { (void)matrix->getType(); }
 }