Fix PCIeSlots build

This got caught up in a tree wide change to setUPRedfishRoute.  Make the
fix.

Tested: Code compiles.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I55c0b1e5e0f578533903385bc80e87efa0bad08f
diff --git a/redfish-core/lib/pcie_slots.hpp b/redfish-core/lib/pcie_slots.hpp
index b340df2..0cc570c 100644
--- a/redfish-core/lib/pcie_slots.hpp
+++ b/redfish-core/lib/pcie_slots.hpp
@@ -260,7 +260,7 @@
     const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
     const std::string& chassisID)
 {
-    if (!redfish::setUpRedfishRoute(app, req, asyncResp->res))
+    if (!redfish::setUpRedfishRoute(app, req, asyncResp))
     {
         return;
     }