fix non-static rb_scan_args
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55180 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix non-static rb_scan_args
caused syntax error if fmt is not a string literal.
warnings by old clang.
inline functions, which do not varidate the format and are
unnecessary to be expanded.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55180 b2dd03c8-39d4-4d8f-98ff-823fe69b080e