don't die when a draft discarded multiple times

This can happen when you open the same draft in multiple
buffers, and discard or send it multiple times.

diff --git a/lib/sup/draft.rb b/lib/sup/draft.rb
index 21de1513a18a71330a8a3ce0679de68e69f86b8c..35fac30ee8cc0915632958abb6579c6ede54ebfa 100644 (file)
--- a/lib/sup/draft.rb
+++ b/lib/sup/draft.rb
@@ -32,7 +32,10 @@ class DraftManager
 
   def discard m
     docid, entry = Index.load_entry_for_id m.id
-    raise ArgumentError, "can't find entry for draft: #{m.id.inspect}" unless entry
+    unless entry
+      Redwood::log "can't find entry for draft: #{m.id.inspect}. You probably already discarded it."
+      return
+    end
     raise ArgumentError, "not a draft: source id #{entry[:source_id].inspect}, should be #{DraftManager.source_id.inspect} for #{m.id.inspect} / docno #{docid}" unless entry[:source_id].to_i == DraftManager.source_id
     Index.drop_entry docid
     File.delete @source.fn_for_offset(entry[:source_info])