load.c: suppress warning
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
load.c: suppress warning
warning by gcc 4.4.5.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e