refactor(pubsub): Cosmetic cleanup in ua_pubsub_reader.c
refactor(pubsub): Cosmetic cleanup in ua_pubsub_reader.c

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