fix build in windows

utils.go

@@ -1,11 +1,16 @@
 package readline
 
 import (
+	"syscall"
 	"unicode"
 
 	"golang.org/x/crypto/ssh/terminal"
 )
 
+var (
+	StdinFd = int(uintptr(syscall.Stdin))
+)
+
 // IsTerminal returns true if the given file descriptor is a terminal.
 func IsTerminal(fd int) bool {
 	return terminal.IsTerminal(fd)

utils_unix.go

@@ -7,10 +7,6 @@ import (
 	"unsafe"
 )
 
-var (
-	StdinFd = syscall.Stdin
-)
-
 type winsize struct {
 	Row    uint16
 	Col    uint16

utils_windows.go

@@ -33,7 +33,6 @@ type (
 )
 
 var (
-	StdinFd  = 0
 	kernel32 = syscall.NewLazyDLL("kernel32.dll")
 	tmp_info console_screen_buffer_info
 
@@ -63,5 +62,5 @@ func get_term_size(out syscall.Handle) coord {
 
 // get width of the terminal
 func getWidth() int {
-	return int(get_term_size(syscall.Stdin).x)
+	return int(get_term_size(syscall.Stdout).x)
 }