[v2pymtl] bugfix for modules with 1-item port lists
[v2pymtl] bugfix for modules with 1-item port lists

Abhinav117/pymtl,Abhinav117/pymtl,cfelton/pymtl,12yujim/pymtl,tj93/pymtl,cornell-brg/pymtl,jck/pymtl,jjffryan/pymtl,tj93/pymtl,Glyfina-Fernando/pymtl,Abhinav117/pymtl,12yujim/pymtl,cfelton/pymtl,jck/pymtl,12yujim/pymtl,cornell-brg/pymtl,Glyfina-Fernando/pymtl,jjffryan/pymtl,Glyfina-Fernando/pymtl,tj93/pymtl,jjffryan/pymtl,cfelton/pymtl,cornell-brg/pymtl,jck/pymtl,Abhinav117/pymtl