minor change

update_psa_helpers

@@ -37,7 +37,7 @@ copy () {
     readarray -td' ' files <<< "$1"
     for f in ${files[@]}; do
         if grep -qE "^.*[.]conf.*$" <<< ${f}; then
-            local __f="${psa_config}/${f}"
+            local __f="${psa_config_dir}/${f}"
             if ! cp ${__f} /etc/psa_config; then
                 log_error "$func:${LINENO}: cannot cp ${__f} /etc/psa_config"
                 return 1