fmt: Code Formatting

src/app/mumta.cpp

src/app/nc-test.cpp

src/lib/nccpp/Ncurses.hpp

src/lib/nccpp/Window.cpp

src/mumta/evloop.cpp

src/net/async_fd.hpp

src/net/async_server.hpp

src/service/daemonctl.hpp

src/service/daemonctl_rcd.cpp

src/service/daemonctl_systemd.cpp