date_core.c: fix indent
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54445 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
date_core.c: fix indent
fix indent not to be a big sole verbatim.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54445 b2dd03c8-39d4-4d8f-98ff-823fe69b080e