--- trunk-1.10/epan/dissectors/packet-sip.c	2013/11/09 14:58:28	53194

+++ trunk-1.10/epan/dissectors/packet-sip.c	2013/11/09 15:44:01	53195

@@ -2134,6 +2134,10 @@

 	 */

 	orig_offset = offset;

 	linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);

+	if(linelen==0){

+		return -2;

+	}

+

 	if (tvb_strnlen(tvb, offset, linelen) > -1)

 	{

 		/*