Material/Cut/Placement is not displayed on label if cut number is 0

--HG--
branch : feature

src/libs/vtools/tools/vtooldetail.cpp

@@ -707,9 +707,12 @@ void VToolDetail::UpdateLabel()
         tl.m_iFontSize = 0;
         for (int i = 0; i < data.GetMCPCount(); ++i) {
             MaterialCutPlacement mcp = data.GetMCP(i);
+            if (mcp.m_iCutNumber > 0)
+            {
                 tl.m_qsText = qsText.arg(mcp.m_iCutNumber).arg(mcp.m_qsMaterialUserDef).arg(qslPlace[int(mcp.m_ePlacement)]);
                 dataLabel->AddLine(tl);
             }
+        }
 
         QPointF pt = data.GetPos() + QPointF(data.GetLabelWidth()/2, data.GetLabelHeight()/2);
         // check if center is inside