small improvement in the fuzz cmake script
small improvement in the fuzz cmake script

JGrothoff/open62541,JGrothoff/open62541,StalderT/open62541,open62541/open62541,StalderT/open62541,jpfr/open62541,open62541/open62541,jpfr/open62541,jpfr/open62541,StalderT/open62541,open62541/open62541,JGrothoff/open62541,open62541/open62541,StalderT/open62541,jpfr/open62541,JGrothoff/open62541