Fix incorrect function reference BufFileOpenShared in comment.

From 95af858d2a9bc2365add7e5ee2afbd6ec2f7a881 Mon Sep 17 00:00:00 2001
From: Zhang Mingli <avamingli@gmail.com>
Date: Wed, 1 Oct 2025 16:09:59 +0800
Subject: [PATCH] Fix incorrect function reference in comment.

The comment incorrectly cited the defunct function BufFileOpenShared()
which is replaced in commit dcac5e7ac157964f71f15d81c7429130c69c3f9b.

Update the reference to the current function: BufFileOpenFileSet().

Authored-by: Zhang Mingli avamingli@gmail.com
---
 src/backend/utils/sort/logtape.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/utils/sort/logtape.c b/src/backend/utils/sort/logtape.c
index e529ceb826..452d89a8c0 100644
--- a/src/backend/utils/sort/logtape.c
+++ b/src/backend/utils/sort/logtape.c
@@ -681,7 +681,7 @@ LogicalTapeCreate(LogicalTapeSet *lts)
 {
 	/*
 	 * The only thing that currently prevents creating new tapes in leader is
-	 * the fact that BufFiles opened using BufFileOpenShared() are read-only
+	 * the fact that BufFiles opened using BufFileOpenFileSet() are read-only
 	 * by definition, but that could be changed if it seemed worthwhile.  For
 	 * now, writing to the leader tape will raise a "Bad file descriptor"
 	 * error, so tuplesort must avoid writing to the leader tape altogether.
-- 
2.34.1