configure.in: Remove superfluous semicolon
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49192 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: Remove superfluous semicolon
which causes a syntax error with autoconf 2.63.
[ruby-core:67429] [Bug #10716]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49192 b2dd03c8-39d4-4d8f-98ff-823fe69b080e