libsyntax: change Parser::unexpected_last to take &Token

Author: erickt

src/libsyntax/parse/common.rs

@@ -51,12 +51,12 @@ pub fn token_to_str(reader: reader, token: &token::Token) -> ~str {
 }
 
 pub impl Parser {
-    fn unexpected_last(t: token::Token) -> ! {
+    fn unexpected_last(t: &token::Token) -> ! {
         self.span_fatal(
             *self.last_span,
             fmt!(
                 "unexpected token: `%s`",
-                token_to_str(self.reader, &t)
+                token_to_str(self.reader, t)
             )
         );
     }

src/libsyntax/parse/parser.rs

@@ -634,7 +634,7 @@ pub impl Parser {
                 |p| p.parse_ty_field()
             );
             if elems.len() == 0 {
-                self.unexpected_last(token::RBRACE);
+                self.unexpected_last(&token::RBRACE);
             }
             ty_rec(elems)
         } else if *self.token == token::LBRACKET {
@@ -868,7 +868,7 @@ pub impl Parser {
                 lit_float_unsuffixed(self.id_to_str(s)),
             token::LIT_STR(s) => lit_str(self.id_to_str(s)),
             token::LPAREN => { self.expect(&token::RPAREN); lit_nil },
-            _ => { self.unexpected_last(*tok); }
+            _ => { self.unexpected_last(tok); }
         }
     }