fix(client): Make ua_client_subscriptions.c clang-analyzer clean
fix(client): Make ua_client_subscriptions.c clang-analyzer clean

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