fix minor skp-found bugs

src/pathops/SkIntersections.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkIntersections_DEFINE
 #define SkIntersections_DEFINE
 
 #include "SkPathOpsCubic.h"
@@ skipping 146 matching lines @@
         quad.set(a);
         fMax = 2;
         return vertical(quad, top, bottom, x, flipped);
     }
 
     int quadLine(const SkPoint a[3], const SkPoint b[2]) {
         SkDQuad quad;
         quad.set(a);
         SkDLine line;
         line.set(b);
-        fMax = 2;
+        fMax = 3; // 2;  permit small coincident segment + non-coincident intersection
         return intersect(quad, line);
     }
 
     int quadQuad(const SkPoint a[3], const SkPoint b[3]) {
         SkDQuad aQuad;
         aQuad.set(a);
         SkDQuad bQuad;
         bQuad.set(b);
         fMax = 4;
         return intersect(aQuad, bQuad);
@@ skipping 98 matching lines @@
 #ifdef SK_DEBUG
     int fDepth;
 #endif
 };
 
 extern int (SkIntersections::*CurveRay[])(const SkPoint[], const SkDLine& );
 extern int (SkIntersections::*CurveVertical[])(const SkPoint[], SkScalar top, SkScalar bottom,
             SkScalar x, bool flipped);
 
 #endif