Fix FTBFS when assertions are turned on
Fix FTBFS when assertions are turned on

m-Schlitzer/ews-cpp,bkircher/ews-cpp,otris/ews-cpp,otris/ews-cpp,m-Schlitzer/ews-cpp,bkircher/ews-cpp,otris/ews-cpp,m-Schlitzer/ews-cpp,otris/ews-cpp,bkircher/ews-cpp