bin/autoproj-show in autoproj-1.12.6 vs bin/autoproj-show in autoproj-1.13.0.b1

@@ -78,10 +78,12 @@
         puts Autoproj.color("source package #{pkg_name}", :bold)
         puts "  source definition"
         vcs = Autoproj.manifest.importer_definition_for(pkg_name)
 
         fragments = []
-        if vcs.raw
+        if !vcs
+            fragments << ["has no VCS definition", []]
+        elsif vcs.raw
             first = true
             fragments << [nil, vcs_to_array(vcs)]
             vcs.raw.each do |pkg_set, vcs_info|
                 title = if first
                             "first match: in #{pkg_set}"