Add template keyword for get calls

Signed-off-by: Jonathan Youett <youett@math.fu-berlin.de>

dune/subgrid/common/variant.hh

@@ -198,7 +198,7 @@ namespace Impl {
       namespace H = Dune::Hybrid;
       H::forEach(H::integralRange(std::integral_constant<size_t, size_>()), [&](auto i) {
             if(i==index_)
-              unions_.set(other.get<i>());
+              unions_.set(other.template get<i>());
           });
     }
 
@@ -211,7 +211,7 @@ namespace Impl {
       namespace H = Dune::Hybrid;
       H::forEach(H::integralRange(std::integral_constant<size_t, size_>()), [&](auto i) {
             if(i==index_)
-              unions_.set(other.get<i>());
+              unions_.set(other.template get<i>());
           });
       return *this;
     }