* init/main.c (main): Warn if we can't set the root directory.
* init/job_process.c (job_process_spawn)
(job_process_error_abort): loop on the return of write()
* init/tests/test_job_process.c (child, main): assert getcwd() works
(test_handler): initialise list and entry for gcc's blind spot.
(test_run): initialise ret for gcc's blind spot
* init/tests/test_job.c (test_name): jump through hoops for gcc
(test_change_state): list and entry.
* init/tests/test_event.c (test_finished_handle_jobs, test_finished)
(test_pending_handle_jobs, test_poll, test_pending): initialise to
NULL and buy gcc glasses
* init/tests/test_event_operator.c (test_operator_collect): another
NULL to make gcc happy.