Don't accept END_OF_CONTENTS octets where they're not allowed. bug 202384.
Don't accept END_OF_CONTENTS octets where they're not allowed. bug 202384.

nmav/nss,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,nmav/nss