Kernel: More PID/TID typing

Author: https://github.com/BenWiederhake
Commit: bee08a4b9f
Pull-request: https://github.com/SerenityOS/serenity/pull/3057
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/bgianfo

Kernel/Scheduler.cpp

@@ -684,9 +684,8 @@ void Scheduler::timer_tick(const RegisterState& regs)
         SmapDisabler disabler;
         auto backtrace = current_thread->raw_backtrace(regs.ebp, regs.eip);
         auto& sample = Profiling::next_sample_slot();
-        // FIXME: PID/TID INCOMPLETE
-        sample.pid = current_thread->process().pid().value();
-        sample.tid = current_thread->tid().value();
+        sample.pid = current_thread->process().pid();
+        sample.tid = current_thread->tid();
         sample.timestamp = g_uptime;
         for (size_t i = 0; i < min(backtrace.size(), Profiling::max_stack_frame_count); ++i) {
             sample.frames[i] = backtrace[i];