Remove unwind from link libs

The reference to the unwind lib belongs in libstd, not here. Also fix
lint error.

Author: raphlinus

src/unix/mod.rs

@@ -231,7 +231,6 @@ cfg_if! {
     } else if #[cfg(target_os = "fuchsia")] {
         #[link(name = "c")]
         #[link(name = "mxio")]
-        #[link(name = "unwind")]
         extern {}
     } else {
         #[link(name = "c")]

src/unix/notbsd/mod.rs

@@ -53,7 +53,9 @@ s! {
         pub ai_protocol: ::c_int,
         pub ai_addrlen: socklen_t,
 
-        #[cfg(any(target_os = "linux", target_os = "emscripten", target_os = "fuchsia"))]
+        #[cfg(any(target_os = "linux",
+                  target_os = "emscripten",
+                  target_os = "fuchsia"))]
         pub ai_addr: *mut ::sockaddr,
 
         pub ai_canonname: *mut c_char,