libfourcc: Fix errors arising from the automated ~[T] conversion

Author: pcwalton

src/libfourcc/lib.rs

@@ -131,7 +131,11 @@ struct Ident {
 }
 
 fn parse_tts(cx: &ExtCtxt, tts: &[ast::TokenTree]) -> (@ast::Expr, Option<Ident>) {
-    let p = &mut parse::new_parser_from_tts(cx.parse_sess(), cx.cfg(), tts.to_owned());
+    let p = &mut parse::new_parser_from_tts(cx.parse_sess(),
+                                            cx.cfg(),
+                                            tts.iter()
+                                               .map(|x| (*x).clone())
+                                               .collect());
     let ex = p.parse_expr();
     let id = if p.token == token::EOF {
         None
@@ -151,7 +155,7 @@ fn parse_tts(cx: &ExtCtxt, tts: &[ast::TokenTree]) -> (@ast::Expr, Option<Ident>
 fn target_endian_little(cx: &ExtCtxt, sp: Span) -> bool {
     let meta = cx.meta_name_value(sp, InternedString::new("target_endian"),
         ast::LitStr(InternedString::new("little"), ast::CookedStr));
-    contains(cx.cfg(), meta)
+    contains(cx.cfg().as_slice(), meta)
 }
 
 // FIXME (10872): This is required to prevent an LLVM assert on Windows