Fix #4243, regression introduced by commit 6e80481384

modules/exploits/multi/misc/java_jdwp_debugger.rb

@@ -173,7 +173,7 @@ class Metasploit3 < Msf::Exploit::Remote
 
   # Reads packet response for JDWP protocol
   def read_reply(timeout = default_timeout)
-    response = sock.get_once(-1, timeout)
+    response = sock.get(timeout)
     fail_with(Failure::TimeoutExpired, "#{peer} - Not received response") unless response
     pktlen, id, flags, errcode = response.unpack('NNCn')
     response.slice!(0..10)