[PATCH] libipt_ULOG.c - include strings.h for the definition of ffs()

[Maciej Żenczykowski <zenczykowski@xxxxxxxxx>]

From: Maciej Żenczykowski <maze@xxxxxxxxxx>

This resolves compiler warnings:

extensions/libext4_srcs/gen/gensrcs/external/iptables/extensions/libipt_ULOG.c:89:32: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  printf(" --ulog-nlgroup %d", ffs(loginfo->nl_group));
                               ^
extensions/libext4_srcs/gen/gensrcs/external/iptables/extensions/libipt_ULOG.c:105:9: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  ffs(loginfo->nl_group));
  ^

Test: builds with less warnings
Signed-off-by: Maciej Żenczykowski <maze@xxxxxxxxxx>
---
 extensions/libipt_ULOG.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extensions/libipt_ULOG.c b/extensions/libipt_ULOG.c
index fafb220b..5163eea3 100644
--- a/extensions/libipt_ULOG.c
+++ b/extensions/libipt_ULOG.c
@@ -11,6 +11,7 @@
  */
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <xtables.h>
 /* For 64bit kernel / 32bit userspace */
 #include <linux/netfilter_ipv4/ipt_ULOG.h>
-- 
2.26.1.301.g55bc3eb7cb9-goog