fix Builder::Handler comparison to another Handler

lib/faraday/builder.rb

@@ -34,7 +34,9 @@ module Faraday
       def inspect() @name end
 
       def ==(other)
-        if other.respond_to? :name
+        if other.is_a? Handler
+          self.name == other.name
+        elsif other.respond_to? :name
           klass == other
         else
           @name == other.to_s

test/middleware_stack_test.rb

@@ -87,6 +87,13 @@ class MiddlewareStackTest < Faraday::TestCase
     assert !duped_connection.builder.locked?
   end
 
+  def test_handler_comparison
+    build_stack Apple
+    assert_equal @builder.handlers.first, Apple
+    assert_equal @builder.handlers[0,1], [Apple]
+    assert_equal @builder.handlers.first, Faraday::Builder::Handler.new(Apple)
+  end
+
   private
 
   # make a stack with test adapter that reflects the order of middleware