openvpn: remove unnecessary loop

Formula/appscale-tools.rb

@@ -67,10 +67,8 @@ class AppscaleTools < Formula
     resource('httplib2').stage { system "python", *install_args }
     resource('python-gflags').stage { system "python", *install_args }
 
-    Dir['bin/appscale*'].each do |command_file|
-      inreplace command_file do |s|
-        s.gsub! /^lib = os.*/, "lib = '#{libexec}'"
-      end
+    inreplace Dir["bin/appscale*"] do |s|
+      s.gsub! /^lib = os.*/, "lib = '#{libexec}'"
     end
 
     prefix.install 'bin', 'templates', 'LICENSE', 'README.md'

Formula/openvpn.rb

@@ -27,14 +27,11 @@ class Openvpn < Formula
     system "make install"
 
     # Adjust sample file paths
-    inreplace ["sample/sample-config-files/openvpn-startup.sh"] do |s|
-      s.gsub! "/etc/openvpn", etc+'openvpn'
-    end
+    inreplace "sample/sample-config-files/openvpn-startup.sh",
+      "/etc/openvpn", "#{etc}/openvpn"
 
     # Install sample files
-    Dir['sample/sample-*'].each do |d|
-      (share + 'doc/openvpn' + d).install Dir[d+'/*']
-    end
+    (doc/"sample").install Dir["sample/sample-*"]
 
     # Create etc & var paths
     (etc + 'openvpn').mkpath