syscall: convert Windows AddrinfoW.Addr from uintptr to syscall.Pointer

API compatibility violation, but it wasn't safe before and people
should be using golang.org/x/sys/windows instead.

Fixes #24820

Change-Id: I3b43493f56b3116924b9d848a294899279f314fd
Reviewed-on: https://go-review.googlesource.com/123455
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

api/except.txt

@@ -362,17 +362,19 @@ pkg syscall (openbsd-386-cgo), const SYS_KILL = 37
 pkg syscall (openbsd-amd64), const SYS_KILL = 37
 pkg syscall (openbsd-amd64-cgo), const SYS_KILL = 37
 pkg unicode, const Version = "9.0.0"
+pkg syscall (windows-386), const TOKEN_ALL_ACCESS = 983295
+pkg syscall (windows-386), type AddrinfoW struct, Addr uintptr
 pkg syscall (windows-386), type CertChainPolicyPara struct, ExtraPolicyPara uintptr
 pkg syscall (windows-386), type CertChainPolicyStatus struct, ExtraPolicyStatus uintptr
 pkg syscall (windows-386), type CertContext struct, CertInfo uintptr
 pkg syscall (windows-386), type CertRevocationInfo struct, CrlInfo uintptr
 pkg syscall (windows-386), type CertRevocationInfo struct, OidSpecificInfo uintptr
 pkg syscall (windows-386), type CertSimpleChain struct, TrustListInfo uintptr
-pkg syscall (windows-386), const TOKEN_ALL_ACCESS = 983295
+pkg syscall (windows-amd64), const TOKEN_ALL_ACCESS = 983295
+pkg syscall (windows-amd64), type AddrinfoW struct, Addr uintptr
 pkg syscall (windows-amd64), type CertChainPolicyPara struct, ExtraPolicyPara uintptr
 pkg syscall (windows-amd64), type CertChainPolicyStatus struct, ExtraPolicyStatus uintptr
 pkg syscall (windows-amd64), type CertContext struct, CertInfo uintptr
 pkg syscall (windows-amd64), type CertRevocationInfo struct, CrlInfo uintptr
 pkg syscall (windows-amd64), type CertRevocationInfo struct, OidSpecificInfo uintptr
 pkg syscall (windows-amd64), type CertSimpleChain struct, TrustListInfo uintptr
-pkg syscall (windows-amd64), const TOKEN_ALL_ACCESS = 983295

api/go1.11.txt

@@ -529,6 +529,7 @@ pkg syscall (openbsd-amd64-cgo), func Pipe2([]int, int) error
 pkg syscall (windows-386), const TOKEN_ADJUST_SESSIONID = 256
 pkg syscall (windows-386), const TOKEN_ADJUST_SESSIONID ideal-int
 pkg syscall (windows-386), const TOKEN_ALL_ACCESS = 983551
+pkg syscall (windows-386), type AddrinfoW struct, Addr Pointer
 pkg syscall (windows-386), type CertChainPolicyPara struct, ExtraPolicyPara Pointer
 pkg syscall (windows-386), type CertChainPolicyStatus struct, ExtraPolicyStatus Pointer
 pkg syscall (windows-386), type CertContext struct, CertInfo *CertInfo
@@ -542,6 +543,7 @@ pkg syscall (windows-386), type Pointer *struct
 pkg syscall (windows-amd64), const TOKEN_ADJUST_SESSIONID = 256
 pkg syscall (windows-amd64), const TOKEN_ADJUST_SESSIONID ideal-int
 pkg syscall (windows-amd64), const TOKEN_ALL_ACCESS = 983551
+pkg syscall (windows-amd64), type AddrinfoW struct, Addr Pointer
 pkg syscall (windows-amd64), type CertChainPolicyPara struct, ExtraPolicyPara Pointer
 pkg syscall (windows-amd64), type CertChainPolicyStatus struct, ExtraPolicyStatus Pointer
 pkg syscall (windows-amd64), type CertContext struct, CertInfo *CertInfo

src/syscall/types_windows.go

@@ -1009,7 +1009,7 @@ type AddrinfoW struct {
 	Protocol  int32
 	Addrlen   uintptr
 	Canonname *uint16
-	Addr      uintptr
+	Addr      Pointer
 	Next      *AddrinfoW
 }