scripts/ref: fix parsing

scripts/ref

@@ -19,10 +19,10 @@ else
     | ($reply.data + $reply.details) as $data
     | [{author: $data.authors | map(.name | splitname),
         isbn: $data.identifiers.isbn_10[0],
-        edition: $data.details.edition_name | split(" ") | .[0] | sub("[a-z]+"; ""),
+        edition: $data.details | (.edition_name // "1") | split(" ") | .[0] | sub("[a-z]+"; ""),
         issued: $data.publish_date,
         publisher: $data.details.publishers[0],
-        "publisher-place": $data.details.publish_places[0],
+        "publisher-place": $data.details | (.publish_places[0] // "Nowhere"),
         type: "book",
         title: $data.title,
         url: ("https://www.worldcat.org/oclc/" + $oclc)}]' \