Win32: Fix glfwWaitEventsTimeout ignoring messages

The bitmask passed to MsgWaitForMultipleObjects was missing
QS_SENDMESSAGE, causing glfwWaitEventsTimeout not to return when the
thread received messages sent from other threads.

Fixes #2408

(cherry picked from commit 509f4131be)

CONTRIBUTORS.md

@@ -140,6 +140,7 @@ video tutorials.
  - Marcel Metz
  - Liam Middlebrook
  - Ave Milia
+ - Icyllis Milica
  - Jonathan Miller
  - Kenneth Miller
  - Bruce Mitchener

README.md

@@ -124,6 +124,7 @@ information on what to include when reporting a bug.
 ## Changelog
 
  - [Win32] Fix pkg-config for dynamic library on Windows (#2386, #2420)
+ - [Win32] Bugfix: `glfwWaitEventsTimeout` did not return for some sent messages (#2408)
  - [Wayland] Added improved fallback window decorations via libdecor (#1639,#1693)
  - [Wayland] Bugfix: Connecting a mouse after `glfwInit` would segfault (#1450)
  - [Wayland] Disabled alpha channel for opaque windows on systems lacking

src/win32_window.c

@@ -2113,7 +2113,7 @@ void _glfwPlatformWaitEvents(void)
 
 void _glfwPlatformWaitEventsTimeout(double timeout)
 {
-    MsgWaitForMultipleObjects(0, NULL, FALSE, (DWORD) (timeout * 1e3), QS_ALLEVENTS);
+    MsgWaitForMultipleObjects(0, NULL, FALSE, (DWORD) (timeout * 1e3), QS_ALLINPUT);
 
     _glfwPlatformPollEvents();
 }