utility.c must include stdarg.h

diff --git a/utility.c b/utility.c
index 78487b9..e353596 100644 (file)
--- a/utility.c
+++ b/utility.c
@@ -36,6 +36,7 @@
 #include <ctype.h>
 #include <stdlib.h>
 #include <limits.h>
+#include <stdarg.h>
 #include <sys/ioctl.h>
 #include <sys/utsname.h>               /* for uname(2) */