fdo#66575 - MathML export: fix errors with newline, binom and stack.

Change-Id: I6833140aaf3fcfc47b81f7d324af88843de00834

starmath/source/mathmlexport.cxx

@@ -871,8 +871,8 @@ void SmXMLExport::ExportTable(const SmNode *pNode, int nLevel)
     if (nSize >= 1)
     {
         const SmNode *pLine = pNode->GetSubNode(nSize-1);
-        if (pLine->GetType() == NLINE && pLine->GetNumSubNodes() > 0 &&
-            pLine->GetSubNode(0)->GetToken().eType == TEND)
+        if (pLine->GetType() == NLINE && pLine->GetNumSubNodes() == 1 &&
+            pLine->GetSubNode(0)->GetToken().eType == TNEWLINE)
             --nSize;
     }
 

starmath/source/parse.cxx

@@ -1072,7 +1072,11 @@ void SmParser::Line()
     //this is to avoid a formula tree without any caret
     //positions, in visual formula editor.
     if(ExpressionArray.empty())
-        ExpressionArray.push_back(new SmExpressionNode(m_aCurToken));
+    {
+        SmToken aTok = SmToken();
+        aTok.eType = TNEWLINE;
+        ExpressionArray.push_back(new SmExpressionNode(aTok));
+    }
 
     SmStructureNode *pSNode = new SmLineNode(m_aCurToken);
     pSNode->SetSubNodes(ExpressionArray);