Fix IW4 XModel Surfaces not being copied even though they are being loaded into the temp block

src/ZoneCode/Game/IW4/XAssets/XModel.txt

@@ -25,6 +25,7 @@ set count boneInfo numBones;
 // XModelLodInfo
 use XModelLodInfo;
 set block modelSurfs XFILE_BLOCK_TEMP;
+set action modelSurfs SetModelSurfs(XModelLodInfo, XModelSurfs);
 set reusable modelSurfs;
 set condition surfs never;
 

src/ZoneLoading/Game/IW4/XAssets/xmodel/xmodel_actions.cpp

@@ -0,0 +1,19 @@
+#include "xmodel_actions.h"
+
+#include <cstring>
+
+using namespace IW4;
+
+Actions_XModel::Actions_XModel(Zone* zone)
+    : AssetLoadingActions(zone)
+{
+}
+
+void Actions_XModel::SetModelSurfs(XModelLodInfo* lodInfo, XModelSurfs* modelSurfs) const
+{
+    if(modelSurfs)
+    {
+        lodInfo->modelSurfs = m_zone->GetMemory()->Create<XModelSurfs>();
+        memcpy(lodInfo->modelSurfs, modelSurfs, sizeof(XModelSurfs));
+    }
+}

src/ZoneLoading/Game/IW4/XAssets/xmodel/xmodel_actions.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "Loading/AssetLoadingActions.h"
+#include "Game/IW4/IW4.h"
+
+namespace IW4
+{
+    class Actions_XModel final : public AssetLoadingActions
+    {
+    public:
+        explicit Actions_XModel(Zone* zone);
+
+        void SetModelSurfs(XModelLodInfo* lodInfo, XModelSurfs* modelSurfs) const;
+    };
+}