fix code style

Author: olafes

compiler/rustc_hir_typeck/src/expr.rs

@@ -1675,15 +1675,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         let mut error_happened = if variant.fields.len() > remaining_fields.len() {
             // Some field is defined more than once. Make sure we don't try to
             // instantiate this struct in static/const context.
-            let guar = self.dcx().span_delayed_bug(expr.span, "struct fields have non-unique names");
+            let guar =
+                self.dcx().span_delayed_bug(expr.span, "struct fields have non-unique names");
             self.set_tainted_by_errors(guar);
 
             true
         } else {
             false
         };
 
-
         // Type-check each field.
         for (idx, field) in hir_fields.iter().enumerate() {
             let ident = tcx.adjust_ident(field.ident, variant.def_id);