x/sys/windows: add func windows.DisconnectNamedPipe(handle Handle) (err error)

Fixes golang/go#66234

Change-Id: I1e4a94e1ca8c01a29bab18e0bf12238c511fe1c6
Reviewed-on: https://go-review.googlesource.com/c/sys/+/570435
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index e8791c8..655a8d7 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -212,6 +212,7 @@
 	procDeleteProcThreadAttributeList                        = modkernel32.NewProc("DeleteProcThreadAttributeList")
 	procDeleteVolumeMountPointW                              = modkernel32.NewProc("DeleteVolumeMountPointW")
 	procDeviceIoControl                                      = modkernel32.NewProc("DeviceIoControl")
+	procDisconnectNamedPipe                                  = modkernel32.NewProc("DisconnectNamedPipe")
 	procDuplicateHandle                                      = modkernel32.NewProc("DuplicateHandle")
 	procExitProcess                                          = modkernel32.NewProc("ExitProcess")
 	procExpandEnvironmentStringsW                            = modkernel32.NewProc("ExpandEnvironmentStringsW")
@@ -342,7 +343,6 @@
 	procSetDefaultDllDirectories                             = modkernel32.NewProc("SetDefaultDllDirectories")
 	procSetDllDirectoryW                                     = modkernel32.NewProc("SetDllDirectoryW")
 	procSetEndOfFile                                         = modkernel32.NewProc("SetEndOfFile")
-	procSetFileValidData                                     = modkernel32.NewProc("SetFileValidData")
 	procSetEnvironmentVariableW                              = modkernel32.NewProc("SetEnvironmentVariableW")
 	procSetErrorMode                                         = modkernel32.NewProc("SetErrorMode")
 	procSetEvent                                             = modkernel32.NewProc("SetEvent")
@@ -351,6 +351,7 @@
 	procSetFileInformationByHandle                           = modkernel32.NewProc("SetFileInformationByHandle")
 	procSetFilePointer                                       = modkernel32.NewProc("SetFilePointer")
 	procSetFileTime                                          = modkernel32.NewProc("SetFileTime")
+	procSetFileValidData                                     = modkernel32.NewProc("SetFileValidData")
 	procSetHandleInformation                                 = modkernel32.NewProc("SetHandleInformation")
 	procSetInformationJobObject                              = modkernel32.NewProc("SetInformationJobObject")
 	procSetNamedPipeHandleState                              = modkernel32.NewProc("SetNamedPipeHandleState")
@@ -1845,6 +1846,14 @@
 	return
 }
 
+func DisconnectNamedPipe(pipe Handle) (err error) {
+	r1, _, e1 := syscall.Syscall(procDisconnectNamedPipe.Addr(), 1, uintptr(pipe), 0, 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) {
 	var _p0 uint32
 	if bInheritHandle {
@@ -2989,14 +2998,6 @@
 	return
 }
 
-func SetFileValidData(handle Handle, validDataLength int64) (err error) {
-	r1, _, e1 := syscall.Syscall(procSetFileValidData.Addr(), 2, uintptr(handle), uintptr(validDataLength), 0)
-	if r1 == 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
 func SetEnvironmentVariable(name *uint16, value *uint16) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetEnvironmentVariableW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), 0)
 	if r1 == 0 {
@@ -3060,6 +3061,14 @@
 	return
 }
 
+func SetFileValidData(handle Handle, validDataLength int64) (err error) {
+	r1, _, e1 := syscall.Syscall(procSetFileValidData.Addr(), 2, uintptr(handle), uintptr(validDataLength), 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetHandleInformation.Addr(), 3, uintptr(handle), uintptr(mask), uintptr(flags))
 	if r1 == 0 {