fix autoconf syntax

diff --git a/libs/ldns/acx_nlnetlabs.m4 b/libs/ldns/acx_nlnetlabs.m4
index 000f8f726df891daf543c0d4a6682731c070c9af..2bcb74440cd04c89f11b70fbe58f02f2bfdf3af9 100644 (file)
--- a/libs/ldns/acx_nlnetlabs.m4
+++ b/libs/ldns/acx_nlnetlabs.m4
@@ -781,9 +781,9 @@ AC_LANG_PROGRAM(
 #include <ws2tcpip.h>
 #endif
 ]])],
-[
+[[
         (void)getaddrinfo(NULL, NULL, NULL, NULL);
-]
+]]
 ),
 [
 ac_cv_func_getaddrinfo="yes"