Change HirVec<P<T>> to HirVec<T> in Expr.

This changes structures like this:
```
[ ExprArray | 8 | P ]
                  |
                  v
                  [ P | P | P | P | P | P | P | P ]
                    |
                    v
                    [ ExprTup | 2 | P ]
                                    |
                                    v
                                    [ P | P ]
                                      |
                                      v
                                      [ Expr ]
```
to this:
```
[ ExprArray | 8 | P ]
                  |
                  v
                  [ [ ExprTup | 2 | P ] | ... ]
                                    |
                                    v
                                    [ Expr | Expr ]
```

1 files changed, 1 insertions, 1 deletions

diff --git a/src/librustc_const_eval/eval.rs b/src/librustc_const_eval/eval.rs
index c265fa97e29..b594fe9853a 100644
--- a/src/librustc_const_eval/eval.rs
+++ b/src/librustc_const_eval/eval.rs
@@ -297,7 +297,7 @@ pub fn const_expr_to_pat<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
                 _ => bug!()
             };
             let pats = args.iter()
-                           .map(|expr| const_expr_to_pat(tcx, &**expr, pat_id, span))
+                           .map(|expr| const_expr_to_pat(tcx, &*expr, pat_id, span))
                            .collect::<Result<_, _>>()?;
             PatKind::TupleStruct(path, pats, None)
         }