[PATCH 2/4] xap_helper.h: fix non-assignable stderr case

[Eric Wong]

I mixed up "flush" with "close" :x

Fixes: 87b7f633f241 (xap_helper: implement mset endpoint for WWW, IMAP, etc...)
---
 lib/PublicInbox/xap_helper.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/PublicInbox/xap_helper.h b/lib/PublicInbox/xap_helper.h
index 18665567..c1ab66f3 100644
--- a/lib/PublicInbox/xap_helper.h
+++ b/lib/PublicInbox/xap_helper.h
@@ -714,7 +714,7 @@ static void stderr_restore(FILE *tmp_err)
        stderr = orig_err;
        return;
 #endif
-       ERR_CLOSE(stderr, EXIT_FAILURE);
+       ERR_FLUSH(stderr);
        while (dup2(orig_err_fd, STDERR_FILENO) < 0) {
                if (errno != EINTR)
                        err(EXIT_FAILURE, "dup2(%d => 2)", orig_err_fd);