message: Add tests of multi-bind GL functions that take NULL arrays
diff: @@ -122,6 +122,9 @@ void main()
  return 5;
  }
  + GLuint trashvao = MakeVAO();
  + glBindVertexArray(trashvao);
  +
  GLuint vao = MakeVAO();
  glBindVertexArray(vao);
  @@ -196,6 +199,14 @@ void main()
  glBindBuffersBase(GL_SHADER_STORAGE_BUFFER, 0, 4, NULL);
  + glBindVertexArray(trashvao);
  + glBindVertexBuffers(0, 4, NULL, NULL, NULL);
  + glBindTextures(0, 10, NULL);
  + glBindSamplers(0, 10, NULL);
  + glBindImageTextures(0, 4, NULL);
  +
  + glBindVertexArray(vao);
  +
  float col[] = {1.0f, 0.0f, 1.0f, 1.0f};
  glClearBufferfv(GL_COLOR, 0, col);
  