bin/xml2gv in ruby-graphviz-1.0.7 vs bin/xml2gv in ruby-graphviz-1.0.8

@@ -1,27 +1,27 @@
 #!/usr/bin/env ruby
 # Copyright (C) 2005 - 2012 Gregoire Lejeune <[e-mail]>
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
-# 
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 
 require 'rubygems'
 require 'getoptlong'
 require 'graphviz/xml'
 
-def usage 
+def usage
   puts "usage: xml2gv [-Tformat] [-ofile] [-h] [-V] script"
   puts "-T, --output-format format    Output format (default: PNG)"
   puts "-o, --output-file file        Output file (default: STDOUT)"
   puts "-p, --path                    Graphviz path"
   puts "-u, --use PROGRAM             Program to use (default: dot)"
@@ -85,10 +85,10 @@
   exit
 end
 
 xFile = ARGV[0]
 
-if xFile.nil? == true
+if xFile.nil?
   usage( )
   exit
 end
 
 gvxml = GraphViz::XML::new( xFile, :text => true, :attrs => true )