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

libraries/libstratosphere/source/htc/server/rpc/htc_rpc_client.cpp

@@ -412,6 +412,9 @@ namespace ams::htc::server::rpc {
     }
 
     s32 RpcClient::GetTaskHandle(u32 task_id) {
+        /* TODO: Why is this necessary to avoid a bogus array-bounds warning? */
+        AMS_ASSUME(task_id < MaxRpcCount);
+
         /* Check pre-conditions. */
         AMS_ASSERT(m_task_active[task_id]);
         AMS_ASSERT(m_is_htcs_task[task_id]);