kernel: Also move children's parent to PID 1 in the common thread exit function

kernel/src/sys/exit.cpp

@@ -7,10 +7,5 @@ Result<u64> sys_exit(Registers*, SyscallArgs args)
 
     Thread* current = Scheduler::current();
 
-    Scheduler::for_each_child(current, [](Thread* child) {
-        child->parent = Scheduler::init_thread();
-        return true;
-    });
-
     current->exit_and_signal_parent(status);
 }

kernel/src/thread/Thread.cpp

@@ -74,6 +74,11 @@ Result<SharedPtr<VFS::Inode>> Thread::resolve_atfile(int dirfd, const String& pa
     if (is_kernel) state = ThreadState::Dying;
     else
     {
+        Scheduler::for_each_child(this, [](Thread* child) {
+            child->parent = Scheduler::init_thread();
+            return true;
+        });
+
         if (parent && parent->state == ThreadState::Waiting)
         {
             auto child = *parent->child_being_waited_for;
@@ -83,6 +88,7 @@ Result<SharedPtr<VFS::Inode>> Thread::resolve_atfile(int dirfd, const String& pa
                 parent->wake_up();
             }
         }
+
         state = ThreadState::Exited;
     }
     status = _status;