add static flag on Windows

diff --git a/util b/util
index 330fd779aa523df84628027f72d0d13143c7d45a..75aa895ae74ccd800a9ecd6c802d806ac0c0b3ee 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 330fd779aa523df84628027f72d0d13143c7d45a
+Subproject commit 75aa895ae74ccd800a9ecd6c802d806ac0c0b3ee