Minor cleanup

Author: sfackler

postgres-derive-codegen/src/fromsql.rs

@@ -100,11 +100,8 @@ fn enum_from_sql_body(ctx: &mut ExtCtxt,
     }
 
     arms.push(quote_arm!(ctx, v => {
-        let err: ::std::boxed::Box<::std::error::Error
-                                   + ::std::marker::Sync
-                                   + ::std::marker::Send>
-            = format!("unknown variant `{}`", v).into();
-        ::std::result::Result::Err(::postgres::error::Error::Conversion(err))
+        ::std::result::Result::Err(::postgres::error::Error::Conversion(
+                format!("unknown variant `{}`", v).into()))
     }));
 
     let buf = token::str_to_ident("buf");

postgres-derive-codegen/src/tosql.rs

@@ -113,7 +113,7 @@ fn enum_to_sql_body(ctx: &mut ExtCtxt,
     let match_ = ctx.expr_match(span, match_arg, arms);
 
     quote_block!(ctx, {
-        let s: &'static str = $match_;
+        let s = $match_;
         try!(::std::io::Write::write_all(out, s.as_bytes()));
         ::std::result::Result::Ok(::postgres::types::IsNull::No)
     })