[PATCH] syscall/prctl.c: Fix unused variable build error with USE_SECCOMP=0.

From: Vinson Lee <[email protected]>

This patch fixes this build error on CentOS 6.

  CC	syscalls/prctl.o
cc1: warnings being treated as errors
syscalls/prctl.c: In function ‘sanitise_prctl’:
syscalls/prctl.c:36: error: unused variable ‘saddr’

Signed-off-by: Vinson Lee <[email protected]>
---
 syscalls/prctl.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/syscalls/prctl.c b/syscalls/prctl.c
index acca027..bde76aa 100644
--- a/syscalls/prctl.c
+++ b/syscalls/prctl.c
@@ -33,7 +33,9 @@ static int prctl_opts[NR_PRCTL_OPTS] = {
 void sanitise_prctl(int childno)
 {
 	int option = prctl_opts[rand() % NR_PRCTL_OPTS];
+#ifdef USE_SECCOMP
 	struct sockaddr *saddr = NULL;
+#endif
 
 // For now, just do SECCOMP, the other options need some attention.
 option = PR_SET_SECCOMP;
-- 
1.7.1