Add memory header to forwardlambdakzeroanalysis.cxx

Author: romainschotter

PWGLF/Tasks/Strangeness/forwardlambdakzeroanalysis.cxx

@@ -76,6 +76,7 @@
 #include <map>
 #include <string>
 #include <vector>
+#include <memory>
 
 using namespace o2;
 using namespace o2::framework;