pack.c: fix buffer overrun
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
pack.c: fix buffer overrun
Mamoru Tasaka and Tomas Hoger. [ruby-core:63604] [Bug #10019]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e