integrate-method in GenericOperators corrected

AMDiS/src/GenericOperatorTerm.h

@@ -785,7 +785,7 @@ eval(AbstractFunction<TOut, WorldVector<double> >* fct) { return function_(wrap(
 
 template<typename Term>
 inline typename boost::enable_if<typename boost::is_base_of<LazyOperatorTermBase, Term>::type, typename Term::value_type>::type
-integrate(Term term);
+integrate(Term term, Mesh* mesh_ = NULL);
 
 
 template<typename Term>

AMDiS/src/GenericOperatorTerm.hh

@@ -53,7 +53,7 @@ namespace AMDiS {
 
 template<typename Term>
 inline typename boost::enable_if<typename boost::is_base_of<LazyOperatorTermBase, Term>::type, typename Term::value_type>::type
-integrate(Term term, Mesh* mesh_ = NULL)
+integrate(Term term, Mesh* mesh_)
 {
   typedef typename Term::value_type TOut;