Retain objects when restored into the object table.

src/xenia/kernel/util/object_table.cc

@@ -401,6 +401,7 @@ X_STATUS ObjectTable::RestoreHandle(X_HANDLE handle, XObject* object) {
   if (table_capacity_ >= slot) {
     auto& entry = table_[slot];
     entry.object = object;
+    object->Retain();
   }
 
   return X_STATUS_SUCCESS;