refactor(server): Remove a static code analysis warning in ua_services_nodemanagement.c
refactor(server): Remove a static code analysis warning in ua_services_nodemanagement.c

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