RelinquishOpenCLKernel 1591 magick/opencl.c MagickBooleanType RelinquishOpenCLKernel(MagickCLEnv clEnv, cl_kernel kernel) RelinquishOpenCLKernel 2927 magick/opencl.c MagickPrivate MagickBooleanType RelinquishOpenCLKernel(