refactor(client): Cosmetic cleanup of ua_client_subscriptions.c
refactor(client): Cosmetic cleanup of ua_client_subscriptions.c

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