updated for version 7.0072
diff --git a/src/os_win32.h b/src/os_win32.h
index d9aaa6e..5554c0c 100644
--- a/src/os_win32.h
+++ b/src/os_win32.h
@@ -24,6 +24,7 @@
 # define HAVE_STRING_H
 #endif
 #define HAVE_STRCSPN
+#define HAVE_VSNPRINTF
 #ifndef __GNUC__
 #define HAVE_STRICMP
 #define HAVE_STRNICMP