- remove useless variable "status" from init_main.

http://www.opengroup.org/onlinepubs/009695399/functions/waitpid.html suggests
that we need not specify a status if we don't want, and we don't.
"If wait() or waitpid() return because the status of a child process is available, these functions shall return a value equal to the process ID of the child process. In this case, if the value of the argument stat_loc is not a null pointer, information shall be stored in the location pointed to by stat_loc.  "
   text    data     bss     dec     hex filename
   5391      32       8    5431    1537 init/init.o.06
   5379      32       8    5419    152b init/init.o

1 files changed, 2 insertions, 3 deletions

diff --git a/init/init.c b/init/init.c
index 9cbe8189a..b17ebc2ce 100644
--- a/init/init.c
+++ b/init/init.c
@@ -1005,7 +1005,6 @@ int init_main(int argc, char **argv)
 {
         struct init_action *a;
         pid_t wpid;
-        int status;
 
         if (argc > 1 && !strcmp(argv[1], "-q")) {
                 return kill(1,SIGHUP);
@@ -1139,7 +1138,7 @@ int init_main(int argc, char **argv)
                 sleep(1);
 
                 /* Wait for a child process to exit */
-                wpid = wait(&status);
+                wpid = wait(NULL);
                 while (wpid > 0) {
                         /* Find out who died and clean up their corpse */
                         for (a = init_action_list; a; a = a->next) {
@@ -1153,7 +1152,7 @@ int init_main(int argc, char **argv)
                                 }
                         }
                         /* see if anyone else is waiting to be reaped */
-                        wpid = waitpid (-1, &status, WNOHANG);
+                        wpid = waitpid (-1, NULL, WNOHANG);
                 }
         }
 }