libstrat: fix compilation without pre-compiled header/without lto

libraries/libstratosphere/include/stratosphere/sf/hipc/sf_hipc_server_manager.hpp

@@ -176,6 +176,7 @@ namespace ams::sf::hipc {
             virtual Server *AllocateServer() = 0;
             virtual void DestroyServer(Server *server)  = 0;
             virtual Result OnNeedsToAccept(int port_index, Server *server) {
+                AMS_UNUSED(port_index, server);
                 AMS_ABORT("OnNeedsToAccept must be overridden when using indexed ports");
             }
 

libraries/libstratosphere/include/stratosphere/sf/hipc/sf_hipc_server_session_manager.hpp

@@ -173,6 +173,7 @@ namespace ams::sf::hipc {
 
             virtual ServerSessionManager *GetSessionManagerByTag(u32 tag) {
                 /* This is unused. */
+                AMS_UNUSED(tag);
                 return this;
             }
     };