Index: scripts/MSSQLm.nse
===================================================================
--- scripts/MSSQLm.nse	(revision 6441)
+++ scripts/MSSQLm.nse	(working copy)
@@ -142,10 +142,12 @@
 	try(socket:close())
 
 	if (not status) then
+		socket:close()
 		return
 	end
 
 	if (response == "TIMEOUT") then
+		socket:close()
 		return
 	end
 	
Index: scripts/PPTPversion.nse
===================================================================
--- scripts/PPTPversion.nse	(revision 6441)
+++ scripts/PPTPversion.nse	(working copy)
@@ -76,10 +76,12 @@
 	status, response = socket:receive_bytes(1)
 
 	if (not status) then
+		socket:close()
 		return
 	end
 
 	if (response == "TIMEOUT") then
+		socket:close()
 		return
 	end
 
Index: scripts/SNMPsysdesr.nse
===================================================================
--- scripts/SNMPsysdesr.nse	(revision 6441)
+++ scripts/SNMPsysdesr.nse	(working copy)
@@ -53,10 +53,12 @@
 	status, response = socket:receive_bytes(1)
 
 	if (not status) then
+		socket:close()
 		return
 	end
 
 	if (response == "TIMEOUT") then
+		socket:close()
 		return
 	end
 	
@@ -81,10 +83,12 @@
 	status, response = socket:receive_bytes(1)
 
 	if (not status) then
+		socket:close()
 		return result
 	end
 
 	if (response == "TIMEOUT") then
+		socket:close()
 		return result
 	end