bugfix: properly choose root messages for threading by subject

diff --git a/lib/sup/thread.rb b/lib/sup/thread.rb
index 4d92ad3dfb1efe4fab37cc41a616aeeef5052755..6519757c467295095c47cdcd45b3fd5332f6e5f2 100644 (file)
--- a/lib/sup/thread.rb
+++ b/lib/sup/thread.rb
@@ -58,7 +58,7 @@ class Thread
   ## messages).
   def each fake_root=false
     adj = 0
-    root = @containers.find_all { |c| !Message.subj_is_reply?(c) }.argmin { |c| c.date || 0 }
+    root = @containers.find_all { |c| c.message && !Message.subj_is_reply?(c.message.subj) }.argmin { |c| c.date }
 
     if root
       adj = 1