Remove unused @verb_to_path_map from RouteToMatcher

Author: timoschilling

lib/rspec/rails/matchers/routing_matchers.rb

@@ -19,7 +19,7 @@ def initialize(scope, *expected)
           end
 
           def matches?(verb_to_path_map)
-            @actual = @verb_to_path_map = verb_to_path_map
+            @actual = verb_to_path_map
             # assert_recognizes does not consider ActionController::RoutingError an
             # assertion failure, so we have to capture that and Assertion here.
             match_unless_raises ActiveSupport::TestCase::Assertion, ActionController::RoutingError do