Correct Windows fio version

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/os/windows/version.h b/os/windows/version.h
index d8f4602..1c25fd8 100644
--- a/os/windows/version.h
+++ b/os/windows/version.h
@@ -3,4 +3,4 @@
 #define FIO_VERSION_MAJOR FIO_MAJOR

 #define FIO_VERSION_MINOR FIO_MINOR

 #define FIO_VERSION_BUILD FIO_PATCH

-#define FIO_VERSION_STRING "1.99.1"

+#define FIO_VERSION_STRING "1.99.4"