core: kernel: Clear process list earlier.

src/core/hle/kernel/kernel.cpp

@@ -76,6 +76,8 @@ struct KernelCore::Impl {
     }
 
     void Shutdown() {
+        process_list.clear();
+
         next_object_id = 0;
         next_kernel_process_id = Process::InitialKIPIDMin;
         next_user_process_id = Process::ProcessIDMin;
@@ -89,8 +91,6 @@ struct KernelCore::Impl {
 
         cores.clear();
 
-        process_list.clear();
-
         current_process = nullptr;
 
         system_resource_limit = nullptr;