From bb71a128eb6e901d3d7deb895971a6706eb7110d Mon Sep 17 00:00:00 2001
From: Ben Woosley <ben.woosley@gmail.com>
Date: Thu, 18 May 2017 15:59:38 -0700
Subject: Prefer st_is_member over st_lookup with 0

The st_is_member DEFINE has simpler semantics, for more readable code.
---
 variable.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'variable.c')

diff --git a/variable.c b/variable.c
index aafb6f4725..b0f87923d4 100644
--- a/variable.c
+++ b/variable.c
@@ -1335,7 +1335,7 @@ rb_ivar_defined(VALUE obj, ID id)
 	break;
       case T_CLASS:
       case T_MODULE:
-	if (RCLASS_IV_TBL(obj) && st_lookup(RCLASS_IV_TBL(obj), (st_data_t)id, 0))
+	if (RCLASS_IV_TBL(obj) && st_is_member(RCLASS_IV_TBL(obj), (st_data_t)id))
 	    return Qtrue;
 	break;
       default:
-- 
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