Small fix for visualbench

bench/GLInstancedArraysBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkImageEncoder.h"
@@ skipping 359 matching lines @@
 
 void GLCpuPosInstancedArraysBench::teardown(const GrGLInterface* gl) {
     GR_GL_CALL(gl, BindBuffer(GR_GL_ARRAY_BUFFER, 0));
     GR_GL_CALL(gl, BindVertexArray(0));
     GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, 0));
     GR_GL_CALL(gl, BindFramebuffer(GR_GL_FRAMEBUFFER, 0));
     GR_GL_CALL(gl, DeleteTextures(1, &fTexture));
     GR_GL_CALL(gl, DeleteProgram(fProgram));
     GR_GL_CALL(gl, DeleteBuffers(fBuffers.count(), fBuffers.begin()));
     GR_GL_CALL(gl, DeleteVertexArrays(1, &fVAO));
+    fBuffers.reset();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseInstance_VboSetup, 0) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseOne_VboSetup, 0) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseTwo_VboSetup, 0) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseOne_VboSetup, 1) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseTwo_VboSetup, 1) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseOne_VboSetup, 2) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseTwo_VboSetup, 2) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseOne_VboSetup, 4) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseTwo_VboSetup, 4) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseOne_VboSetup, 8) )
 DEF_BENCH( return new GLCpuPosInstancedArraysBench(GLCpuPosInstancedArraysBench::kUseTwo_VboSetup, 8) )
 
 #endif