* ruby-runner.c (ruby_libm_func): removed as the following test
  actually doesn't need the path of libm.

* test/fiddle/test_pointer.rb (Fiddle::TestPointer#test_free=):
  removed never used constants and instance variables.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63957 b2dd03c8-39d4-4d8f-98ff-823fe69b080e