Use auto instead of lengthy type

dune/fufem/assemblers/localassemblers/normalstressboundaryassembler.hh

@@ -44,7 +44,7 @@ public:
         localVector = 0.0;
 
         // geometry of the boundary face
-        const typename BoundaryIterator::Intersection::Geometry segmentGeometry = it->geometry();
+        const auto segmentGeometry = it->geometry();
 
         // get quadrature rule
         const int order = inside.type().isSimplex()