Adding SRVHOST check

Author: msutovsky-r7

modules/exploits/multi/http/wondercms_rce.rb

@@ -151,6 +151,7 @@ def exploit
     if Rex::Socket.is_ip_addr?(datastore['SRVHOST']) && Rex::Socket.addr_atoi(datastore['SRVHOST']) == 0
       fail_with(Exploit::Failure::BadConfig, 'The SRVHOST option must be set to a routable IP address.')
     end
+
     login
 
     create_vulnerable_zip