Adjust various functions to prototype style which are defined under

NO_CANCELLATION conditionals.

Upstream, the function definitions were removed in:

commit c6bb095eb544aa32d3f4b8e9aa434d686915446e

Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>

Date:   Sun Sep 28 08:46:23 2014 -0300

    nptl: Rewrite cancellation macros

diff --git a/sysdeps/unix/sysv/linux/sigsuspend.c b/sysdeps/unix/sysv/linux/sigsuspend.c

index 1cd1de88d303fd66..e5ae86382bc74c7d 100644

--- a/sysdeps/unix/sysv/linux/sigsuspend.c

+++ b/sysdeps/unix/sysv/linux/sigsuspend.c

@@ -53,8 +53,7 @@ strong_alias (__sigsuspend, __libc_sigsuspend)

 #ifndef NO_CANCELLATION

 int

-__sigsuspend_nocancel (set)

-     const sigset_t *set;

+__sigsuspend_nocancel (const sigset_t *set)

 {

   return do_sigsuspend (set);

 }