Log Message:
Update to 52.2.1

Changelog:
52.2.1
    Fixed Problems with Gmail (folders not showing, repeated email download, \ 
etc.) introduced in version 52.2.0.

52.2.0
    Fixed Embedded images not shown in email received from Hotmail/Outlook webmailer
    Fixed Detection of non-ASCII font names in font selector
    Fixed Attachment not forwarded correctly under certain circumstances
    Fixed Multiple requests for master password when GMail OAuth2 is enabled
    Fixed Large number of blank pages being printed under certain circumstances \ 
when invalid preferences were present
    Fixed Messages sent via the Simple MAPI interface are forced to HTML
    Fixed Calendar: Invitations can't be printed
    Fixed Mailing list (group) not accessible from macOS or Outlook address book
    Fixed Clicking on links with references/anchors where target doesn't exist \ 
in the message not opening in external browser
    Fixed Various security fixes

#CVE-2017-5472: Use-after-free using destroyed node when regenerating trees
#CVE-2017-7749: Use-after-free during docshell reloading
#CVE-2017-7750: Use-after-free with track elements
#CVE-2017-7751: Use-after-free with content viewer listeners
#CVE-2017-7752: Use-after-free with IME input
#CVE-2017-7754: Out-of-bounds read in WebGL with ImageInfo object
#CVE-2017-7756: Use-after-free and use-after-scope logging XHR header errors
#CVE-2017-7757: Use-after-free in IndexedDB
#CVE-2017-7758: Out-of-bounds read in Opus encoder
#CVE-2017-7763: Mac fonts render some unicode characters as spaces
#CVE-2017-7764: Domain spoofing with combination of Canadian Syllabics and other \ 
unicode blocks
#CVE-2017-7765: Mark of the Web bypass when saving executable files
#CVE-2017-5470: Memory safety bugs fixed in Firefox 54 and Firefox ESR 52.2, and \ 
Thunderbird 52.2

52.1.1
    Fixed Large attachments may not be shown or saved correctly if the message \ 
is stored in an IMAP folder which is not synchronized for offline use
    Fixed Unable to load full message via POP if message was downloaded \ 
partially (or only headers) before
    Fixed Some attachments can't be opened or saved if the message body is empty
    Fixed Crash when compacting IMAP folder