Fix CVE-2020-15953: STARTTLS buffering issue that affects IMAP, SMTP, and POP3. This patch is the merge of the two upstream commits fixing the issue: - first by Fabian Ising <Murgeye@users.noreply.github.com>, fixing the issue in SMTP/POP3 - second by Damian Poddebniak <duesee@users.noreply.github.com>, fixing the issue in IMAP commit:1002a0121a8f5a9aee25357769807f2c519fa50b
diff --git a/src/low-level/imap/mailimap.c b/src/low-level/imap/mailimap.c index 0921a7f..330bb5e 100644