proc.c: set ep properly
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52036 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
proc.c: set ep properly
[ruby-core:70980] [Bug #11566]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52036 b2dd03c8-39d4-4d8f-98ff-823fe69b080e