ko1	2015-10-30 06:45:07 +0900 (Fri, 30 Oct 2015)

  New Revision: 52369

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=52369

  Log:
    use NULL instead of 0

  Modified files:
    trunk/vm.c
Index: vm.c
===================================================================
--- vm.c	(revision 52368)
+++ vm.c	(revision 52369)
@@ -1142,7 +1142,7 @@ rb_vm_cref(void) https://github.com/ruby/ruby/blob/trunk/vm.c#L1142
     rb_thread_t *th = GET_THREAD();
     rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
 
-    if (cfp == 0) {
+    if (cfp == NULL) {
 	return NULL;
     }
 

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