[PATCH b4] Avoid case where message-id and in-reply-to id match

[alison.schofield@intel.com]

From: Alison Schofield <alison.schofield@intel.com>

A user error while sending a patchset created a lore link that b4 is
not able to handle. The unexpected matching message-id and in-reply-to
id sends b4 into an infinite loop while 'Analyzing follow-up'.

Add a check and break for this case.

b4 am -c https://lore.kernel.org/all/cover.1674070170.git.alison.schofield@intel.com/

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
---

Not so sure this is the first place that b4 can and should detect this.

 b4/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/b4/__init__.py b/b4/__init__.py
index 94c1693..4ed8ad8 100644
--- a/b4/__init__.py
+++ b/b4/__init__.py
@@ -333,6 +333,9 @@ class LoreMailbox:
                     pmsg.followup_trailers += trailers
                     break
                 if pmsg.in_reply_to and pmsg.in_reply_to in self.msgid_map:
+                    # Avoid bad message id causing infinite loop
+                    if pmsg == self.msgid_map[pmsg.in_reply_to]:
+                        break
                     lvl += 1
                     for pltr in pmsg.trailers:
                         pltr.lmsg = pmsg

base-commit: 2eb1ab30a6a6f6b140f19ef36b5af7f73f000720
-- 
2.37.3