* file.c: Change AND condition to nested condition.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45774 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
add indent

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fix typos

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45776 b2dd03c8-39d4-4d8f-98ff-823fe69b080e