decrease times of running test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29213 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/nkf/test_nkf.rb

@@ -15,7 +15,7 @@ Ruby"
 
   def test_ruby_dev_36909
     assert_nothing_raised do
-      1000.times { NKF.nkf("--oc=eucJP-nkf", "foo") }
+      100.times { NKF.nkf("--oc=eucJP-nkf", "foo") }
     end
   end