Don't use explicit return inside Proc.

An explicit return inside a Proc can return from the current scope.
This fixes an issue with the test exiting before all tests are run.

Author: Tobias Haagen Michaelsen

test/test_discover.rb

@@ -746,13 +746,9 @@ def test_discover_function
       # XXX these were all different tests in python, but they're
       # combined here so I only have to use with_method_overridden
       # once.
-      discoverXRI = Proc.new { |identifier|
-        return 'XRI'
-      }
+      discoverXRI = Proc.new { |identifier| 'XRI' }
 
-      discoverURI = Proc.new { |identifier|
-        return 'URI'
-      }
+      discoverURI = Proc.new { |identifier| 'URI' }
 
       OpenID.extend(OverrideMethodMixin)