Fix windows build (add #include <io.h>)

diff --git a/src/util.cc b/src/util.cc
index 4d9adf3..c88dc4e 100644 (file)
--- a/src/util.cc
+++ b/src/util.cc
@@ -16,6 +16,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
+#include <io.h>
 #endif
 
 #include <errno.h>