symbol.c: suppress warnings
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51684 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
symbol.c: suppress warnings
where ID_TABLE_IMPL is 0, 1, or 11.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51684 b2dd03c8-39d4-4d8f-98ff-823fe69b080e