Do return instead of abort

Author: jvazquez-r7

modules/auxiliary/scanner/http/cisco_ssl_vpn_priv_esc.rb

@@ -208,7 +208,7 @@ def run_host(ip)
     # Validate we're dealing with Cisco SSL VPN
     unless validate_cisco_ssl_vpn
       vprint_error("#{peer} - Does not appear to be Cisco SSL VPN")
-      :abort
+      return
     end
 
     # This is crude, but I've found this to be somewhat