From 97ef4c77ba0e623487b392695fed4cc4d3785e28 Mon Sep 17 00:00:00 2001
From: Daniel Juarez <34030545+djuarezg@users.noreply.github.com>
Date: Mon, 25 May 2020 17:34:33 +0200
Subject: [PATCH] mantisbt: Handle duplicates with no relationships

Currently, bugs with duplicates cause AttachCentosBugs action to fail
as it asumes duplicate relationships cannot be empty and iterates
over a NoneType instead of using a list. This can be observed with
https://bugs.centos.org/view.php?id=11115. This commit allows to use
an empty list if there are no relationships.
---
 src/pyfaf/bugtrackers/mantisbt.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pyfaf/bugtrackers/mantisbt.py b/src/pyfaf/bugtrackers/mantisbt.py
index 6c6ea8aa7..c0bbbc038 100644
--- a/src/pyfaf/bugtrackers/mantisbt.py
+++ b/src/pyfaf/bugtrackers/mantisbt.py
@@ -153,7 +153,7 @@ def preprocess_bug(self, bug):
             return None
 
         if bug_dict["resolution"] == "DUPLICATE":
-            for relationship in bug.relationships:
+            for relationship in bug.relationships or []:
                 if relationship.type.name == "duplicate of":
                     bug_dict["dupe_id"] = relationship.target_id
                     break