fix test to follow r53503

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_proc.rb

@@ -1149,7 +1149,7 @@ class TestProc < Test::Unit::TestCase
     assert_equal([[:req, :a], [:opt, :b], [:req, :c], [:keyrest, :o]], method(:pmk6).to_proc.parameters)
     assert_equal([[:req, :a], [:opt, :b], [:rest, :c], [:req, :d], [:keyrest, :o]], method(:pmk7).to_proc.parameters)
 
-    assert_equal([], "".method(:upcase).to_proc.parameters)
+    assert_equal([], "".method(:empty?).to_proc.parameters)
     assert_equal([[:rest]], "".method(:gsub).to_proc.parameters)
     assert_equal([[:rest]], proc {}.curry.parameters)
   end