util.c: Make sure to include stdarg.h

Fixes build on NetBSD.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index 56dd6c6..1cf9bcd 100644
--- a/src/util.c
+++ b/src/util.c
@@ -28,6 +28,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <ncurses.h>
+#include <stdarg.h>
 #include <locale.h>
 
 int winrows, wincols;