Display unsquaring time again in adaptivity handler

The time variable was unused, which caused the builds to fail.

dune/dorie/interface/adaptivity.hh

@@ -204,6 +204,7 @@ public:
 				std::cout << std::setprecision(4) << std::scientific;
 				std::cout << "::: setup time" << std::setw(12) << t_setup << std::endl;
 				std::cout << "::: error estimation time" << std::setw(12) << t_est << std::endl;
+				std::cout << "::: unsquaring time" << std::setw(12) << t_sqrt << std::endl;
 				std::cout << "::: strategy application time" << std::setw(12) << t_strtgy << std::endl;
 				std::cout << "::: grid marking time" << std::setw(12) << t_mark << std::endl;
 				std::cout << "::: grid adaptation time" << std::setw(12) << t_adapt << std::endl;