MFH: r431252

mail/phpmailer: Update from 5.2.20 to 5.2.22

• SECURITY: Fix CVE-2017-5223, local file disclosure vulnerability if content passed to msgHTML() is sourced from unfiltered user input
• Add simple contact form example
• Emoji in test content

Security: CVE-2017-5223

Approved by: ports-secteam (feld)