starmath: Drop unused 1st argument of SmErrorNode's ctor

Change-Id: I01d8fa4bcfbfd4757230ff54902967f709216111
Reviewed-on: https://gerrit.libreoffice.org/28678Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

starmath/inc/node.hxx

@@ -597,7 +597,7 @@ public:
 class SmErrorNode : public SmMathSymbolNode
 {
 public:
-    SmErrorNode(SmParseError /*eError*/, const SmToken &rNodeToken)
+    explicit SmErrorNode(const SmToken &rNodeToken)
     :   SmMathSymbolNode(NERROR, rNodeToken)
     {
         SetText(OUString(MS_ERROR));

starmath/source/cursor.cxx

@@ -1661,7 +1661,7 @@ SmNode* SmNodeListParser::Postfix(){
 }
 
 SmNode* SmNodeListParser::Error(){
-    return new SmErrorNode(PE_UNEXPECTED_TOKEN, SmToken());
+    return new SmErrorNode(SmToken());
 }
 
 bool SmNodeListParser::IsOperator(const SmToken &token) {

starmath/source/parse.cxx

@@ -2287,7 +2287,7 @@ void SmParser::DoGlyphSpecial()
 void SmParser::Error(SmParseError eError)
 {
     SmStructureNode *pSNode = new SmExpressionNode(m_aCurToken);
-    SmErrorNode     *pErr   = new SmErrorNode(eError, m_aCurToken);
+    SmErrorNode     *pErr   = new SmErrorNode(m_aCurToken);
     pSNode->SetSubNodes(pErr, nullptr);
 
     //! put a structure node on the stack (instead of the error node itself)

starmath/source/visitors.cxx

@@ -1830,8 +1830,7 @@ void SmCloningVisitor::Visit( SmBlankNode* pNode )
 
 void SmCloningVisitor::Visit( SmErrorNode* pNode )
 {
-    //PE_NONE is used the information have been discarded and isn't used
-    pResult = new SmErrorNode( PE_NONE, pNode->GetToken( ) );
+    pResult = new SmErrorNode( pNode->GetToken( ) );
     CloneNodeAttr( pNode, pResult );
 }