fix build

wipeboltcard/database.go

@@ -27,6 +27,27 @@ func db_open() (*sql.DB, error) {
 	return db, nil
 }
 
+func db_get_setting(setting_name string) (string) {
+
+        setting_value := ""
+
+        db, err := db_open()
+        if err != nil {
+                return ""
+        }
+        defer db.Close()
+
+        sqlStatement := `select value from settings where name=$1;`
+
+        row := db.QueryRow(sqlStatement, setting_name)
+        err = row.Scan(&setting_value)
+        if err != nil {
+                return ""
+        }
+
+        return setting_value
+}
+
 func db_get_card_name_count(card_name string) (card_count int, err error) {
 
         card_count = 0