fix(Windows): fixes a failing windows build

Author: kbknapp

src/fmt.rs

@@ -8,11 +8,16 @@ use ansi_term::ANSIString;
 #[cfg(feature = "color")]
 use libc;
 
-#[cfg(feature = "color")]
+#[cfg(all(feature = "color", not(target_os = "windows")))]
 const STDERR: i32 = libc::STDERR_FILENO;
-#[cfg(feature = "color")]
+#[cfg(all(feature = "color", not(target_os = "windows")))]
 const STDOUT: i32 = libc::STDOUT_FILENO;
 
+#[cfg(any(not(feature = "color"), target_os = "windows"))]
+const STDERR: i32 = 0;
+#[cfg(any(not(feature = "color"), target_os = "windows"))]
+const STDOUT: i32 = 0;
+
 #[doc(hidden)]
 #[derive(Debug, Copy, Clone, PartialEq)]
 pub enum ColorWhen {

src/lib.rs

@@ -407,7 +407,7 @@ extern crate strsim;
 extern crate ansi_term;
 #[cfg(feature = "yaml")]
 extern crate yaml_rust;
-#[cfg(all(feature = "wrap_help", not(target_os = "windows")))]
+#[cfg(any(feature = "wrap_help", feature = "color"))]
 extern crate libc;
 #[cfg(all(feature = "wrap_help", not(target_os = "windows")))]
 extern crate unicode_width;