added missing header file for sprintf

diff --git a/childio.c b/childio.c
index 6f35b8c..4381889 100644 (file)
--- a/childio.c
+++ b/childio.c
@@ -59,6 +59,7 @@
 
 #include "config.h"
 
+#include <stdio.h>
 #include <signal.h>
 #if HAVE_UNISTD_H
 # include <unistd.h>