Remove RETURN_RESULT macro

src/builtins/builtins-regexp.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/builtins/builtins-utils.h"
 #include "src/builtins/builtins.h"
 
 #include "src/code-factory.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-utils.h"
@@ skipping 42 matching lines @@
 
   Handle<String> flags_string;
   if (flags->IsUndefined(isolate)) {
     flags_string = isolate->factory()->empty_string();
   } else {
     ASSIGN_RETURN_ON_EXCEPTION(isolate, flags_string,
                                Object::ToString(isolate, flags), JSRegExp);
   }
 
   // TODO(jgruber): We could avoid the flags back and forth conversions.
-  RETURN_RESULT(isolate,
-                JSRegExp::Initialize(regexp, pattern_string, flags_string),
-                JSRegExp);
+  return JSRegExp::Initialize(regexp, pattern_string, flags_string);
 }
 
 }  // namespace
 
 // ES#sec-regexp-pattern-flags
 // RegExp ( pattern, flags )
 BUILTIN(RegExpConstructor) {
   HandleScope scope(isolate);
 
   Handle<HeapObject> new_target = args.new_target();
@@ skipping 1632 matching lines @@
   {
     Node* const match_elements = a->LoadElements(match_indices);
     Node* result = ConstructNewResultFromMatchInfo(isolate, a, context,
                                                    match_elements, string);
     a->Return(result);
   }
 }
 
 }  // namespace internal
 }  // namespace v8