selftests: netfilter: kill running process only

Avoid noise like the following:
nft_flowtable.sh: line 250: kill: (4691) - No such process

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/tools/testing/selftests/netfilter/nft_flowtable.sh b/tools/testing/selftests/netfilter/nft_flowtable.sh
index e98cac6f8bfdd1e7beda840bfbd4b8d0aad149c1..a47d1d83221049949c11cb8e292444f5c7d578eb 100755 (executable)
--- a/tools/testing/selftests/netfilter/nft_flowtable.sh
+++ b/tools/testing/selftests/netfilter/nft_flowtable.sh
@@ -250,8 +250,14 @@ test_tcp_forwarding_ip()
 
        sleep 3
 
-       kill $lpid
-       kill $cpid
+       if ps -p $lpid > /dev/null;then
+               kill $lpid
+       fi
+
+       if ps -p $cpid > /dev/null;then
+               kill $cpid
+       fi
+
        wait
 
        check_transfer "$ns1in" "$ns2out" "ns1 -> ns2"