Fix more breakage similar to rust-lang/rust#36340 and 11f1186

Fixes sfackler#222.

src/lib.rs

@@ -791,7 +791,7 @@ impl InnerConnection {
  let mut fields = vec![];
  for row in rows {
  let (name, type_) = {
- let get_raw = |i| row.get(i).and_then(|r| r.as_ref().map(|r| &**r));
+ let get_raw = |i: usize| row.get(i).and_then(|r| r.as_ref().map(|r| &**r));
  let ctx = SessionInfo::new(&self.parameters);
  let name = try!(String::from_sql_nullable(&Type::Name, get_raw(0), &ctx)
  .map_err(Error::Conversion));