Minor change

Author: jhonabreul

Tests/Brokerages/SecurityProvider.cs

@@ -96,7 +96,7 @@ private Security CreateSecurity(Symbol symbol)
                 ),
                 quoteCurrency,
                 symbolProperties,
-                ErrorCurrencyConverter.Instance,
+                new CashBook(),
                 RegisteredSecurityDataTypesProvider.Null,
                 new SecurityCache()
             );