Test reverse.

spec/test-lists.cr

@@ -48,4 +48,10 @@ describe "DoubleLinkedList" do
 
 		list.size.should eq 0
 	end
+
+	it "reverse" do
+		list = DoubleLinkedList(Int32).new
+		list << 1 << 2 << 3 << 4
+		list.reverse.to_s.should eq "[ 4, 3, 2, 1 ]"
+	end
 end

src/list.cr

@@ -264,7 +264,7 @@ class DoubleLinkedList(V)
 	# values = [1, 2, 3]
 	# list = DoubleLinkedList(Int32).new(values)
 	# list.each do |elem|
-	#	 puts elem
+	#	puts elem
 	# end
 	def each
 		each_node do |node|