Fix thread-safety issues in Mapper.GetGenericType
Fix thread-safety issues in Mapper.GetGenericType

mono/dbus-sharp,openmedicus/dbus-sharp,arfbtwn/dbus-sharp,Tragetaschen/dbus-sharp,mono/dbus-sharp,arfbtwn/dbus-sharp,Tragetaschen/dbus-sharp,openmedicus/dbus-sharp