Combine an if and a match in maybe_recover_struct_lit_bad_delims.

Author: nnethercote

compiler/rustc_parse/src/parser/expr.rs

@@ -1229,11 +1229,8 @@ impl<'a> Parser<'a> {
         seq: &mut PResult<'a, P<Expr>>,
         snapshot: Option<(SnapshotParser<'a>, ExprKind)>,
     ) -> Option<P<Expr>> {
-        if !self.may_recover() {
-            return None;
-        }
-        match (seq.as_mut(), snapshot) {
-            (Err(err), Some((mut snapshot, ExprKind::Path(None, path)))) => {
+        match (self.may_recover(), seq.as_mut(), snapshot) {
+            (true, Err(err), Some((mut snapshot, ExprKind::Path(None, path)))) => {
                 snapshot.bump(); // `(`
                 match snapshot.parse_struct_fields(path.clone(), false, Delimiter::Parenthesis) {
                     Ok((fields, ..))