On install images without timezone data, the set_timezone function
returned before wait_cgiinfo was called. This meant the list of mirrors
was downloaded, but never presented to the user.

Call wait_cgiinfo in do_install directly (this more closely matches how
do_upgrade does it).

Tests welcome, I've tested amd64/ramdiskA, affects:
$ grep -L '^TZ' */*/list
amd64/ramdiskA/list
i386/ramdisk/list
sparc64/ramdiskB/list


Index: install.sub
===================================================================
RCS file: /cvs/src/distrib/miniroot/install.sub,v
diff -u -p -r1.1289 install.sub
--- install.sub	5 Sep 2026 11:28:38 -0000	1.1289
+++ install.sub	18 Sep 2026 20:44:50 -0000
@@ -2366,7 +2366,6 @@ set_timezone() {
 		TZ=${TZ#*${_zoneroot#/mnt}/}
 	fi
 
-	wait_cgiinfo
 	isin "$CGI_TZ" $(<$_zonefile) && TZ=$CGI_TZ
 
 	# If neither the base or HTTP_LIST gave a hint, and this is the
@@ -3214,6 +3213,9 @@ do_install() {
 	# Gather information for setting up the initial user account.
 	user_setup
 	ask_root_sshd
+
+	# Ensure that previous installer choices (e.g. timezone) are available.
+	wait_cgiinfo
 
 	# Set TZ variable based on zonefile and user selection.
 	set_timezone /var/tzlist