Fix datastore options

modules/auxiliary/scanner/smb/smb_enumusers_domain.rb

@@ -88,12 +88,20 @@ class Metasploit3 < Msf::Auxiliary
     accounts
   end
 
+  def rport
+    @rport || datastore['RPORT']
+  end
+
+  def smbdirect
+    @smbdirect || datastore['SMBDirect']
+  end
+
   def run_host(ip)
 
     [[139, false], [445, true]].each do |info|
 
-    datastore['RPORT'] = info[0]
+    @rport = info[0]
-    datastore['SMBDirect'] = info[1]
+    @smbdirect = info[1]
 
     begin
       connect()