Update to ruby/spec@f8a2d54

spec/ruby/core/kernel/printf_spec.rb

@@ -1,7 +1,6 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/sprintf'
-require "stringio"
 
 describe "Kernel#printf" do
   it "is a private method" do
@@ -32,8 +31,14 @@ describe "Kernel.printf" do
     object.should_receive(:write).with("string")
     Kernel.printf(object, "%s", "string")
   end
+end
 
+describe "Kernel.printf" do
   describe "formatting" do
+    before :each do
+      require "stringio"
+    end
+
     context "io is specified" do
       it_behaves_like :kernel_sprintf, -> format, *args {
         io = StringIO.new
@@ -45,7 +50,6 @@ describe "Kernel.printf" do
     context "io is not specified" do
       it_behaves_like :kernel_sprintf, -> format, *args {
         stdout = $stdout
-
         begin
           $stdout = io = StringIO.new
           Kernel.printf(format, *args)