Fix FTBFS when !EWS_HAS_MAKE_UNIQUE
Fix FTBFS when !EWS_HAS_MAKE_UNIQUE

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