Fix text report console output on JRuby

brakeman.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
   s.add_dependency "ruby2ruby", "2.0.3"
   s.add_dependency "terminal-table", "~>1.4"
   s.add_dependency "fastercsv", "~>1.5"
-  s.add_dependency "highline", "~>1.6"
+  s.add_dependency "highline", "~>1.6.19"
   s.add_dependency "erubis", "~>2.6"
   s.add_dependency "haml", ">=3.0", "<5.0"
   s.add_dependency "sass", "~>3.0"

lib/brakeman/report.rb

@@ -3,7 +3,7 @@ require 'set'
 require 'brakeman/processors/output_processor'
 require 'brakeman/util'
 require 'terminal-table'
-require 'highline/system_extensions'
+require 'highline'
 require "csv"
 require 'multi_json'
 require 'brakeman/version'

lib/brakeman/util.rb

@@ -385,7 +385,7 @@ module Brakeman::Util
 
   def truncate_table str
     @terminal_width ||= if $stdin && $stdin.tty?
-                          ::HighLine::SystemExtensions::terminal_size[0]
+                          ::HighLine.new.terminal_size[0]
                         else
                           80
                         end