* ChangeLog: revert a part of r38595. 'iff' means 'if and only if', not typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index 602e7a3294..37eb858d23 100644
--- a/thread.c
+++ b/thread.c
@@ -4599,7 +4599,7 @@ recursive_list_access(void)
 }
 
 /*
- * Returns Qtrue if obj_id (or the pair <obj, paired_obj>) is already
+ * Returns Qtrue iff obj_id (or the pair <obj, paired_obj>) is already
  * in the recursion list.
  * Assumes the recursion list is valid.
  */