Simplify various `Symbol` use points.

Including removing a bunch of unnecessary `.as_str()` calls, and a bunch
of unnecessary sigils.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/libsyntax_ext/env.rs b/src/libsyntax_ext/env.rs
index 58fe56bd235..6fb48bf8173 100644
--- a/src/libsyntax_ext/env.rs
+++ b/src/libsyntax_ext/env.rs
@@ -21,7 +21,7 @@ pub fn expand_option_env<'cx>(cx: &'cx mut ExtCtxt<'_>,
     };
 
     let sp = cx.with_def_site_ctxt(sp);
-    let e = match env::var(&*var.as_str()) {
+    let e = match env::var(&var.as_str()) {
         Err(..) => {
             let lt = cx.lifetime(sp, Ident::new(kw::StaticLifetime, sp));
             cx.expr_path(cx.path_all(sp,
diff --git a/src/libsyntax_ext/format.rs b/src/libsyntax_ext/format.rs
index 37310f46f7e..57b948858aa 100644
--- a/src/libsyntax_ext/format.rs
+++ b/src/libsyntax_ext/format.rs
@@ -992,7 +992,7 @@ pub fn expand_preparsed_format_args(
         vec![]
     };
 
-    let fmt_str = &*fmt_str.as_str();  // for the suggestions below
+    let fmt_str = &fmt_str.as_str();  // for the suggestions below
     let mut parser = parse::Parser::new(fmt_str, str_style, skips, append_newline);
 
     let mut unverified_pieces = Vec::new();