Fixed recursive call to HashMap.computeIfAbsent in VariableCloner
Fixed recursive call to HashMap.computeIfAbsent in VariableCloner

lolski/grakn,graknlabs/grakn,lolski/grakn,lolski/grakn,graknlabs/grakn,lolski/grakn,graknlabs/grakn,graknlabs/grakn