sprintf.c: fix buffer overflow
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
sprintf.c: fix buffer overflow
greater than precision. reported by William Bowling .
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e