Possible error in CDxfRead::DoRead: missing POLYLINE about heekscad HOT 1 OPEN

diff --git a/Application/core/dxf/dxf.cpp b/Application/core/dxf/dxf.cpp
index 18a85d9084..0998cafd86 100644
--- a/Application/core/dxf/dxf.cpp
+++ b/Application/core/dxf/dxf.cpp
@@ -2612,10 +2612,13 @@ void CDxfRead::DoRead(const bool ignore_errors /* = false */ )
 	{
 		if(!strcmp(m_str, "0"))
 		{
 			m_thickness = 0.0;
 			get_line();
+                        while (!strcmp(m_str, "0"))
+                            get_line();
+
 			if (!strcmp( m_str, "SECTION" )){
 				if(!ReadSection())
 				{
 					wprintf(wxT("CDxfRead::DoRead() Failed to read block\n"));
 					return;