From c0e169b52acd858ef9327858699487d7668a33b4 Mon Sep 17 00:00:00 2001
From: Hai Shi <shihai1992@gmail.com>
Date: Tue, 15 Jun 2021 19:21:55 +0800
Subject: [PATCH] Lock the CRITICAL_SECTION before unlocking it

---
 Python/condvar.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Python/condvar.h b/Python/condvar.h
index 8cba19b84612dc..80f071ada4dc23 100644
--- a/Python/condvar.h
+++ b/Python/condvar.h
@@ -162,13 +162,13 @@ _PyCOND_WAIT_MS(PyCOND_T *cv, PyMUTEX_T *cs, DWORD ms)
 {
     DWORD wait;
     cv->waiting++;
-    PyMUTEX_UNLOCK(cs);
+    PyMUTEX_LOCK(cs);
     /* "lost wakeup bug" would occur if the caller were interrupted here,
      * but we are safe because we are using a semaphore which has an internal
      * count.
      */
     wait = WaitForSingleObjectEx(cv->sem, ms, FALSE);
-    PyMUTEX_LOCK(cs);
+    PyMUTEX_UNLOCK(cs);
     if (wait != WAIT_OBJECT_0)
         --cv->waiting;
         /* Here we have a benign race condition with PyCOND_SIGNAL.