hostid: improve extremely unreadable parts

*: remove checks of sigaction and sigprocmask results
 in cases where they clearly can't fail:
 sigaction(known_good_sig)
 sigprocmask(known_good_how)

    text           data     bss     dec     hex filename
-    393              4       0     397     18d libc/pwd_grp/lckpwdf.o
+    382              4       0     386     182 libc/pwd_grp/lckpwdf.o
-     56              0       0      56      38 libc/signal/sigblock.o
+     44              0       0      44      2c libc/signal/sigblock.o
-    211              0       0     211      d3 libc/signal/sigset.o
+    202              0       0     202      ca libc/signal/sigset.o
-     56              0       0      56      38 libc/signal/sigsetmask.o
+     44              0       0      44      2c libc/signal/sigsetmask.o
-    309              0       0     309     135 libc/unistd/sleep.o
+    256              0       0     256     100 libc/unistd/sleep.o

1 files changed, 1 insertions, 2 deletions

diff --git a/libpthread/linuxthreads.old/pthread.c b/libpthread/linuxthreads.old/pthread.c
index 391527e62..562aa433c 100644
--- a/libpthread/linuxthreads.old/pthread.c
+++ b/libpthread/linuxthreads.old/pthread.c
@@ -650,8 +650,7 @@ int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
   request.req_args.create.attr = attr;
   request.req_args.create.fn = start_routine;
   request.req_args.create.arg = arg;
-  sigprocmask(SIG_SETMASK, (const sigset_t *) NULL,
-              &request.req_args.create.mask);
+  sigprocmask(SIG_SETMASK, NULL, &request.req_args.create.mask);
   PDEBUG("write REQ_CREATE to manager thread\n");
   TEMP_FAILURE_RETRY(__libc_write(__pthread_manager_request,
 	      (char *) &request, sizeof(request)));