Testsuite: fix build on older Linuxen

diff --git a/test/src/fakens.c b/test/src/fakens.c
index 1228c70f9ab16ccec003f994681e03caa7dc3624..31b6471fa2e061e8686b5fd9687aed6291fc11b5 100644 (file)
--- a/test/src/fakens.c
+++ b/test/src/fakens.c
@@ -64,6 +64,7 @@ as such then the response will have the "AD" bit set. */
 #include <string.h>
 #include <netdb.h>
 #include <errno.h>
+#include <signal.h>
 #include <arpa/nameser.h>
 #include <sys/types.h>
 #include <sys/time.h>