configure.in: do not use a variable for longjmp
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: do not use a variable for longjmp
variable as the second argument of __builtin_longjmp().
[ruby-core:61800] [Bug #9692]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e