no setuptools req are returned

--HG--
branch : distribute
extra : rebase_source : 9f1046762c344f8646742365d4beca34ae51c228

pkg_resources.py

@@ -2501,6 +2501,8 @@ class Requirement:
                         return self.parse('distribute')
                     except ValueError:
                         return founded_req
+                return founded_req
+
             raise ValueError("Expected only one requirement", s)
         raise ValueError("No requirements found", s)