fix: bug in old gcc versions that disallows {0} initialisation
fix: bug in old gcc versions that disallows {0} initialisation

More information here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36750

StalderT/open62541,jpfr/open62541,jpfr/open62541,open62541/open62541,JGrothoff/open62541,bostjanv/open62541,open62541/open62541,JGrothoff/open62541,AGIsmail/open62541,jpfr/open62541,open62541/open62541,jpfr/open62541,JGrothoff/open62541,AGIsmail/open62541,open62541/open62541,StalderT/open62541,StalderT/open62541,JGrothoff/open62541,StalderT/open62541,bostjanv/open62541