fix potential hang when server doesn't respond

git-svn-id: file:///home/svn/framework3/trunk@7602 4d416f70-5f16-0410-b530-b9f4589650da

modules/auxiliary/admin/motorola/wr850g_cred.rb

@@ -31,7 +31,7 @@ class Metasploit3 < Msf::Auxiliary
 		connect
 
 		sock.put("GET /ver.asp HTTP/1.0\r\n\r\n")
-		response = sock.get
+		response = sock.get_once
 
 		disconnect
 

modules/exploits/linux/pptp/poptop_negative_read.rb

@@ -103,9 +103,9 @@ class Metasploit3 < Msf::Exploit::Remote
 	def check
 		connect
 		sock.put(build_packet(156))
-		res = sock.get
+		res = sock.get_once
 
-		if res =~ /MoretonBay/
+		if res and res =~ /MoretonBay/
 			return Exploit::CheckCode::Detected
 		end