From 6e0dd3e7c1786e33c3193d0b4dd9579655c4e842 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Fri, 20 Sep 2019 21:06:07 +0900
Subject: [PATCH] Use RUBY_VM_NEXT_CONTROL_FRAME macro

in vm_push_frame and limit scope of i.
Just a minor maintainability improvement.
---
 vm_insnhelper.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index bea8d10037..56767a4a62 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -269,8 +269,7 @@ vm_push_frame(rb_execution_context_t *ec,
 	      int local_size,
 	      int stack_max)
 {
-    rb_control_frame_t *const cfp = ec->cfp - 1;
-    int i;
+    rb_control_frame_t *const cfp = RUBY_VM_NEXT_CONTROL_FRAME(ec->cfp);
 
     vm_check_frame(type, specval, cref_or_me, iseq);
     VM_ASSERT(local_size >= 0);
@@ -290,7 +289,7 @@ vm_push_frame(rb_execution_context_t *ec,
     /* setup vm value stack */
 
     /* initialize local variables */
-    for (i=0; i < local_size; i++) {
+    for (int i=0; i < local_size; i++) {
 	*sp++ = Qnil;
     }