tdf#120703 PVS: variable is assigned values twice successively

V519 The 'aToken.aText' variable is assigned values twice successively.
     Perhaps this is a mistake. Check lines: 1147, 1163.

Change-Id: I9bcb9a302a182932d7b15f25ee64005158d50a46
Reviewed-on: https://gerrit.libreoffice.org/62422
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

starmath/source/mathmlimport.cxx

@@ -1161,7 +1161,6 @@ void SmXMLFencedContext_Impl::EndElement()
     SmNodeStack &rNodeStack = GetSmImport().GetNodeStack();
 
     aToken.cMathChar = '\0';
-    aToken.aText = ",";
     aToken.eType = TIDENT;
 
     auto i = rNodeStack.size() - nElementCount;