Use Dune::Hybrid::size explicitly.

See https://gitlab.dune-project.org/core/dune-common/issues/77

dune/matrix-vector/algorithm.hh

@@ -13,7 +13,7 @@ namespace MatrixVector {
 template <class Range, class F, EnableTupleOrDerived<Range, int> = 0>
 void sparseRangeFor(Range&& range, F&& f) {
   using namespace Dune::Hybrid;
-  forEach(integralRange(size(range)), [&](auto&& i) {
+  forEach(integralRange(Dune::Hybrid::size(range)), [&](auto&& i) {
       f(range[i], i);
   });
 }