STYLE: Removed unreachable code after `throw std::runtime_error`
STYLE: Removed unreachable code after `throw std::runtime_error`

Fixed MSVC Warning Level 4 warning C4702: unreachable code

SuperElastix/SuperElastix,SuperElastix/SuperElastix,kaspermarstal/SuperElastix,SuperElastix/SuperElastix,kaspermarstal/SuperElastix,SuperElastix/SuperElastix,kaspermarstal/SuperElastix