message: More fixes for OpenCL error reporting.
diff: @@ -1883,13 +1883,13 @@ UMat mapGLBuffer(const Buffer& buffer, AccessFlag accessFlags)
  cl_int status = 0;
  cl_mem clBuffer = clCreateFromGLBuffer(context, clAccessFlags, buffer.bufId(), &status);
  if (status != CL_SUCCESS)
  - CV_Error(cv::Error::OpenCLApiCallError, ("OpenCL: clCreateFromGLBuffer failed: %d", status));
  + CV_Error_(cv::Error::OpenCLApiCallError, ("OpenCL: clCreateFromGLBuffer failed: %d", status));
  gl::Finish();
  status = clEnqueueAcquireGLObjects(clQueue, 1, &clBuffer, 0, NULL, NULL);
  if (status != CL_SUCCESS)
  - CV_Error(cv::Error::OpenCLApiCallError, ("OpenCL: clEnqueueAcquireGLObjects failed: %d", status));
  + CV_Error_(cv::Error::OpenCLApiCallError, ("OpenCL: clEnqueueAcquireGLObjects failed: %d", status));
  size_t step = buffer.cols() * buffer.elemSize();
  int rows = buffer.rows();
  