fix umfpack issues under windows

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@22147 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

SimulationRuntime/cpp/Include/Core/Math/SparseMatrix.h

@@ -40,7 +40,7 @@ struct sparse_inserter  {
 
     inline t2 operator()(const unsigned int  i, const unsigned int j)
     {
-      t2 res(i,j,content);
+      t2 res(i-1,j-1,content);
       return res;
     }