[geary/wip/archive-spam-714546] Don't allow archive from spam

[Charles Lindsay <clindsay src gnome org>]

commit 47492dbc30c32c02c9c7b1759a64d712fcf5d5e1
Author: Charles Lindsay <chaz yorba org>
Date:   Wed Mar 12 11:11:08 2014 -0700

    Don't allow archive from spam

 .../gmail/imap-engine-gmail-account.vala           |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/engine/imap-engine/gmail/imap-engine-gmail-account.vala 
b/src/engine/imap-engine/gmail/imap-engine-gmail-account.vala
index c52ec44..9ad9a29 100644
--- a/src/engine/imap-engine/gmail/imap-engine-gmail-account.vala
+++ b/src/engine/imap-engine/gmail/imap-engine-gmail-account.vala
@@ -50,6 +50,7 @@ private class Geary.ImapEngine.GmailAccount : Geary.ImapEngine.GenericAccount {
                     special_folder_type);
             
             case SpecialFolderType.DRAFTS:
+            case SpecialFolderType.SPAM:
             case SpecialFolderType.TRASH:
                 return new GenericFolder(this, remote_account, local_account, local_folder,
                     special_folder_type);