fix misc asserts and checks found by fuzzer

include/effects/Sk1DPathEffect.h

Index: include/effects/Sk1DPathEffect.h
diff --git a/include/effects/Sk1DPathEffect.h b/include/effects/Sk1DPathEffect.h
index 3419dc23b7458fb084b83339e9a287a51d12ad52..03c696694339cb3cb1f2542df8b1eb557114f95b 100644
--- a/include/effects/Sk1DPathEffect.h
+++ b/include/effects/Sk1DPathEffect.h
@@ -46,7 +46,7 @@ public:
         kRotate_Style,      // rotate the shape about its center
         kMorph_Style,       // transform each point, and turn lines into curves
 
-        kStyleCount
+        kLastEnum_Style = kMorph_Style,
     };
 
     /** Dash by replicating the specified path.
@@ -56,9 +56,7 @@ public:
         @param style how to transform path at each point (based on the current
                      position and tangent)
     */
-    static SkPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, Style style) {
-        return new SkPath1DPathEffect(path, advance, phase, style);
-    }
+    static SkPathEffect* Create(const SkPath& path, SkScalar advance, SkScalar phase, Style);
 
     virtual bool filterPath(SkPath*, const SkPath&,
                             SkStrokeRec*, const SkRect*) const override;