NFQ: fix configure check for finding out signed/unsigned args for nfq_get_payload

diff --git a/configure.ac b/configure.ac
index 4dc9242288cda8e596d2d3346bf29cf1f045e99b..1d861d9f36ee938f06aa19f1514aeaf15b8d128e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -710,6 +710,7 @@ AC_INIT(configure.ac)
         AC_COMPILE_IFELSE(
             [AC_LANG_PROGRAM(
                 [
+                #include <stdio.h>
                 #include <libnetfilter_queue/libnetfilter_queue.h>
                 ],
                 [