Replace std::make_tuple with simpler syntax (#77)

* boot2: Simplify g_additional_launch_programs

It appears that Stratosphère is targeting C++17. In C++17,
std::make_tuple is not required for initialisating a tuple anymore.
Same thing, but less typing

* Replace std::make_tuple with {}

More readable and less noise. Also fixes two missing return statements.

stratosphere/sm/source/sm_manager_service.cpp

@@ -24,9 +24,9 @@ Result ManagerService::handle_deferred() {
 
 
 std::tuple<Result> ManagerService::register_process(u64 pid, InBuffer<u8> acid_sac, InBuffer<u8> aci0_sac) {
-    return std::make_tuple(Registration::RegisterProcess(pid, acid_sac.buffer, acid_sac.num_elements, aci0_sac.buffer, aci0_sac.num_elements));
+    return {Registration::RegisterProcess(pid, acid_sac.buffer, acid_sac.num_elements, aci0_sac.buffer, aci0_sac.num_elements)};
 }
 
 std::tuple<Result> ManagerService::unregister_process(u64 pid) {
-    return std::make_tuple(Registration::UnregisterProcess(pid));
-}
+    return {Registration::UnregisterProcess(pid)};
+}

stratosphere/sm/source/sm_user_service.cpp

@@ -33,7 +33,7 @@ Result UserService::handle_deferred() {
 std::tuple<Result> UserService::initialize(PidDescriptor pid) {
     this->pid = pid.pid;
     this->has_initialized = true;
-    return std::make_tuple(0);
+    return {0};
 }
 
 std::tuple<Result, MovedHandle> UserService::get_service(u64 service) {
@@ -51,13 +51,13 @@ std::tuple<Result, MovedHandle> UserService::get_service(u64 service) {
     if (rc == RESULT_DEFER_SESSION) {
         this->deferred_service = service;
     }
-    return std::make_tuple(rc, MovedHandle{session_h});
+    return {rc, MovedHandle{session_h}};
 }
 
 std::tuple<Result, MovedHandle> UserService::deferred_get_service(u64 service) {
     Handle session_h = 0;
     Result rc = Registration::GetServiceHandle(service, &session_h);
-    return std::make_tuple(rc, MovedHandle{session_h});
+    return {rc, MovedHandle{session_h}};
 }
 
 std::tuple<Result, MovedHandle> UserService::register_service(u64 service, u8 is_light, u32 max_sessions) {
@@ -71,7 +71,7 @@ std::tuple<Result, MovedHandle> UserService::register_service(u64 service, u8 is
     if (this->has_initialized) {
         rc = Registration::RegisterServiceForPid(this->pid, service, max_sessions, is_light != 0, &service_h);
     }
-    return std::make_tuple(rc, MovedHandle{service_h});
+    return {rc, MovedHandle{service_h}};
 }
 
 std::tuple<Result> UserService::unregister_service(u64 service) {
@@ -84,5 +84,5 @@ std::tuple<Result> UserService::unregister_service(u64 service) {
     if (this->has_initialized) {
         rc = Registration::UnregisterServiceForPid(this->pid, service);
     }
-    return std::make_tuple(rc);
+    return {rc};
 }