don't draw if maxVertices returns 0 or > than uin16_t max

src/gpu/GrDefaultPathRenderer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDefaultPathRenderer.h"
 
 #include "GrBatch.h"
@@ skipping 272 matching lines @@
         for (int i = 0; i < instanceCount; i++) {
             Geometry& args = fGeoData[i];
 
             int contourCount;
             maxVertices += GrPathUtils::worstCasePointCount(args.fPath, &contourCount,
                                                             args.fTolerance);
 
             isIndexed = isIndexed || contourCount > 1;
         }
 
+        if (maxVertices == 0 || maxVertices > ((int)SK_MaxU16 + 1)) {
+            SkDebugf("Cannot render path (%d)\n", maxVertices);
+            return;
+        }
+
         // determine primitiveType
         int maxIndices = 0;
         GrPrimitiveType primitiveType;
         if (this->isHairline()) {
             if (isIndexed) {
                 maxIndices = 2 * maxVertices;
                 primitiveType = kLines_GrPrimitiveType;
             } else {
                 primitiveType = kLineStrip_GrPrimitiveType;
             }
@@ skipping 423 matching lines @@
 
 void GrDefaultPathRenderer::onStencilPath(GrDrawTarget* target,
                                           GrPipelineBuilder* pipelineBuilder,
                                           const SkMatrix& viewMatrix,
                                           const SkPath& path,
                                           const SkStrokeRec& stroke) {
     SkASSERT(SkPath::kInverseEvenOdd_FillType != path.getFillType());
     SkASSERT(SkPath::kInverseWinding_FillType != path.getFillType());
     this->internalDrawPath(target, pipelineBuilder, GrColor_WHITE, viewMatrix, path, stroke, true);
 }