tracker_service: convert maps to lists for make_list

Otherwise under python 3, make_list will fail with empty maps
as the map object will evaluate to true even if it's empty.

We could cast to a list in make_list before evaluating it, but
then we would need to ensure that we're receiving a valid type.
This is probably simpler.

1 files changed, 3 insertions, 3 deletions

diff --git a/bin/tracker_service.py b/bin/tracker_service.py
index 88295050a7..cc0e0e4d6b 100755
--- a/bin/tracker_service.py
+++ b/bin/tracker_service.py
@@ -519,7 +519,7 @@ data source.""")],
                     bugs = n.bugs
                     bugs.sort()
                     bugs = make_list(
-                        map(lambda x: self.make_debian_bug(url, x), bugs))
+                        list(map(lambda x: self.make_debian_bug(url, x), bugs)))
                     if n.bug_origin:
                         origin = self.make_xref(url, n.bug_origin)
                     else:
@@ -1593,12 +1593,12 @@ Debian bug number.'''),
         return A(url.scriptRelative(name), name)
 
     def make_xref_list(self, url, lst, separator=', '):
-        return make_list(map(lambda x: self.make_xref(url, x), lst), separator)
+        return make_list(list(map(lambda x: self.make_xref(url, x), lst)), separator)
 
     def make_debian_bug(self, url, debian):
         return A(self.url_debian_bug(url, debian), str(debian))
     def make_debian_bug_list(self, url, lst):
-        return make_list(map(lambda x: self.make_debian_bug(url, x), lst))
+        return make_list(list(map(lambda x: self.make_debian_bug(url, x), lst)))
 
     def make_cve_ref(self, url, cve, name=None):
         if name is None: