tuttlePlugin: fixed compilation issue (regression)

Author: edubois

libraries/tuttlePlugin/src/tuttle/common/utils/Formatter.hpp

@@ -20,6 +20,7 @@
 #include <boost/log/sources/severity_logger.hpp>
 #include <boost/log/sources/record_ostream.hpp>
 #include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/utility/empty_deleter.hpp>
 #include <boost/log/expressions/formatters/stream.hpp>
 #include <boost/log/expressions/attr.hpp>
 #include <boost/log/expressions/message.hpp>