libstore/remote-store: avoid old-style casting for maxConnections

Type-checking works better this way as (type) style casting is too
permissive.

Author: Mic92

src/libstore/remote-store.cc

@@ -28,7 +28,7 @@ RemoteStore::RemoteStore(const Params & params)
     : RemoteStoreConfig(params)
     , Store(params)
     , connections(make_ref<Pool<Connection>>(
-            std::max(1, (int) maxConnections),
+            std::max(1, maxConnections.get()),
             [this]() {
                 auto conn = openConnectionWrapper();
                 try {