revert(10i18n): stop leaking shell options

This reverts commit 3506476, to replace
the implementation.

modules.d/10i18n/module-setup.sh

@@ -30,7 +30,11 @@ install() {
     I18N_CONF="/etc/locale.conf"
     VCONFIG_CONF="/etc/vconsole.conf"
 
-    _findkeymap() {
+    findkeymap() {
+        # shellcheck disable=SC2064
+        trap "$(shopt -p nullglob globstar)" RETURN
+        shopt -q -s nullglob globstar
+
         local -a MAPS
         local MAPNAME
         local INCLUDES
@@ -62,21 +66,12 @@ install() {
             for INCL in "${INCLUDES[@]}"; do
                 for FN in "$dracutsysrootdir""${kbddir}"/keymaps/**/"$INCL"*; do
                     [[ -f $FN ]] || continue
-                    [[ -v KEYMAPS["$FN"] ]] || _findkeymap "$FN"
+                    [[ -v KEYMAPS["$FN"] ]] || findkeymap "$FN"
                 done
             done
         done
     }
 
-    # Wrapper around the recursive _findkeymap making sure the shell
-    # options are restored correctly
-    findkeymap() {
-        # shellcheck disable=SC2064
-        trap "$(shopt -p nullglob globstar)" RETURN
-        shopt -q -s nullglob globstar
-        _findkeymap "$@"
-    }
-
     # Function gathers variables from distributed files among the tree, maps to
     # specified names and prints the result in format "new-name=value".
     #