handle Files stanzas with no Copyright field

1 files changed, 2 insertions, 1 deletions

diff --git a/export.py b/export.py
index 7fd7a0e..4bcf4f5 100644
--- a/export.py
+++ b/export.py
@@ -111,9 +111,10 @@ def srcpkg_extract_licenses(header, filess):
             txt = lname
 
         canon = lmap.get(lname.lower(), 'Other')
+        # XXX: Should maybe bail if there's no copyright field.
         cp = ''.join(
             u'© %s\n' % line
-            for line in files['Copyright'].splitlines())
+            for line in files.dropna().get('Copyright', '').splitlines())
         cp = cp.encode('utf8')
         txt = txt.encode('utf8')