test 2410 fails when port number is 4 digits or less

[vszakats]

I did this

Run an unrelated PR, and saw this flaky test fail:

test 2410...[duplicate named glob]

 2410: stderr FAILED:
--- log/5/check-expected	Tue May 12 11:51:24 2026
+++ log/5/check-generated	Tue May 12 11:51:24 2026
@@ -1,3 +1,3 @@
-curl: (3) Duplicate glob name in position 30:[CR][LF]
+curl: (3) Duplicate glob name in position 29:[CR][LF]
 127.0.0.1:7394/{<test>A,B}{<test>C,D}[CR][LF]
-                             ^[CR][LF]
+                            ^[CR][LF]

Ref: #21566 (comment)

Caret position needs a 5-digit port to pass the test.

Related: cb06369 #21409

I expected the following

Test to pass.

curl/libcurl version

master

operating system

seen on OpenBSD, but agnostic