Merge pull request swiftlang#23206 from compnerd/overlay-the-ugliness

Author: swift-ci

stdlib/public/Windows/WinSDK.swift

@@ -42,6 +42,7 @@ public let INVALID_SOCKET: SOCKET = SOCKET(bitPattern: -1)
 public let FIONBIO: Int32 = 0x4667e
 
 // WinUser.h
+public let CW_USEDEFAULT: Int32 = Int32(truncatingIfNeeded: 2147483648)
 public let WS_OVERLAPPEDWINDOW: UINT =
     UINT(WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX)
 public let WS_POPUPWINDOW: UINT =