Kernel: Don't re-assign object's handle when duplicating one

src/core/hle/kernel/kernel.cpp

@@ -39,7 +39,8 @@ ResultVal<Handle> HandleTable::Create(std::shared_ptr<Object> obj) {
     if (next_generation >= (1 << 15)) next_generation = 1;
 
     Handle handle = generation | (slot << 15);
-    obj->handle = handle;
+    if (obj->handle == INVALID_HANDLE)
+        obj->handle = handle;
 
     generations[slot] = generation;
     objects[slot] = std::move(obj);

src/core/hle/kernel/kernel.h

@@ -53,7 +53,7 @@ class HandleTable;
 
 class Object : NonCopyable, public std::enable_shared_from_this<Object> {
     friend class HandleTable;
-    u32 handle;
+    u32 handle = INVALID_HANDLE;
 public:
     virtual ~Object() {}
     Handle GetHandle() const { return handle; }