updated database manager for throwing error when query fails

Author: biozal

CbliteSwiftJsLib/Classes/DatabaseManager.swift

@@ -262,7 +262,7 @@ public class DatabaseManager {
             let jsonArray = "[" + resultJSONs.joined(separator: ",") + "]"
             return jsonArray
         } catch {
-            throw QueryError.unknownError(message: error.localizedDescription)
+            throw error
         }
     }