Update dmarc.lua

Update dmarc.lua

With name:

dmarc; dmarc.lua:191: munging debug: {[domain] = domain.tld [flags] = {[valid] = true, [braced] = true}, [name] = Name [domain.tld], [raw] = <user@domain.tld>, [addr] = user@domain.tld, [user] = user}

dmarc; dmarc.lua:234: munged DMARC header for domain.tld: Name [domain.tld] via mark <otheruser@otherdomain.tld> -> user@domain.tld

Without name:
dmarc; dmarc.lua:191: munging debug: {[domain] = domain.tld [flags] = {[valid] = true, [braced] = true}, [name] = , [raw] = <user@domain.tld>, [addr] = user@domain.tld, [user] = user}

dmarc.lua:234: munged DMARC header for domain.tld: user via otheruser <otheruser@otherdomain.tld> -> user@domain.tld