intf-add: list CLI on win32 regardless of stdin

Win32 spawns its own console so this is irrelevant
(cherry picked from commit f1433011c2cae9e25cfcb56d64cc92b2f523df4e)
Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr>

src/interface/interface.c

@@ -87,7 +87,9 @@ int intf_Create( vlc_object_t *p_this, const char *psz_module )
                 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
     text.psz_string = _("Add Interface");
     var_Change( p_intf, "intf-add", VLC_VAR_SETTEXT, &text, NULL );
+#if !defined(WIN32) && defined(HAVE_ISATTY)
     if( isatty( 0 ) )
+#endif
     {
         val.psz_string = (char *)"rc";
         text.psz_string = (char *)_("Console");