[ipvsadm PATCH 2/2] ipvsadm: fix compile warning in modprobe_ipvs

[Jesper Dangaard Brouer <brouer@redhat.com>]

From: Daniel Borkmann <dborkman@redhat.com>

ipvsadm.c: In function ‘modprobe_ipvs’:
ipvsadm.c:1249:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
  int rc;
      ^
Address this by also checking if waitpid(2) returned successfully
before we check actual status information.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
---
 ipvsadm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ipvsadm.c b/ipvsadm.c
index 8931412..72ddc8a 100644
--- a/ipvsadm.c
+++ b/ipvsadm.c
@@ -1255,7 +1255,7 @@ static int modprobe_ipvs(void)
 
 	rc = waitpid(child, &status, 0);
 
-	if (!WIFEXITED(status) || WEXITSTATUS(status)) {
+	if (rc == -1 || !WIFEXITED(status) || WEXITSTATUS(status)) {
 		return 1;
 	}