ampPileChangedRecipients sometimes doesn't work for replies

[tylermenezes]

When opening the composer to reply to a message, AMPComposerInfo.localMessage.GetMails only returns the "from" address. This leads to bugs like #8.

Repro

1. [email protected] receives message from [email protected]
2. Hit "reply" in Airmail

Expected: Airmail calls ampPileChangedRecipients with [info.localMessage GetMails] set to an array of one NSString: "[email protected]"

Actual: Airmail calls ampPileChangedRecipients with [info.localMessage GetMails] set to an array of one NSString: "[email protected]"

---

Subsequent calls work as expected, and checking after a delay works as expected. For example, this code will re-run ampPileChangedRecipients with the correct data after a short delay (which solves #8):

- (NSArray*) ampPileComposerView:(AMPComposerInfo *)info
{   
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [self ampPileChangedRecipients:info];
    });

    return @[];
}