The second is right !!!. Namely, $\displaystyle 2\pi\,\mathrm{i}\,{1 \over 2!}\,\lim_{z \to 0}{\mathrm{d}^{2} \over \mathrm{d}z^{2}}\left[z^{3}\,{1 \over z^{3}\left(z + 4\right)}\right] = \pi\,\mathrm{i}\,\lim_{z \to 0}{2 \over \left(z + 4\right)^{3}} = \bbox[5px,border:1px dotted navy]{\displaystyle{\pi \over 32}\,\mathrm{i}}$