source_io_unregister  645 src/libsystemd/sd-event/sd-event.c                         source_io_unregister(s);
source_io_unregister 1246 src/libsystemd/sd-event/sd-event.c                                 source_io_unregister(s);
source_io_unregister 1442 src/libsystemd/sd-event/sd-event.c                         r = source_io_unregister(s);