fixup!

Author: greole

core/multigrid/pgm.cpp

@@ -531,6 +531,12 @@ void Pgm<ValueType, IndexType>::generate()
                                             distributed_setup);
         }
 
+            using fst_mtx_type =
+                experimental::distributed::Matrix<ValueType, IndexType,
+                                                  IndexType>;
+            using snd_mtx_type =
+                experimental::distributed::Matrix<ValueType, IndexType, int64>;
+
         auto distributed_setup = [&](auto matrix) {
             auto exec = gko::as<LinOp>(matrix)->get_executor();
             auto comm =