WINED3D: Return the result of QueryInterface in GetContainer

[H. Verbeet]

Changing the return value to WINED3DERR_INVALIDCALL when
QueryInterface fails is unnecessary and loses information. Returning
the result of QueryInterface is more consistent with d3d8 and d3d9 as
well.

Changelog:
  - Return the result of QueryInterface in GetContainer.
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diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index e270701..4651010 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -236,10 +236,7 @@ HRESULT WINAPI IWineD3DSurfaceImpl_GetCo
     }
 
     TRACE("Relaying to QueryInterface\n");
-    if (IUnknown_QueryInterface(container, riid, ppContainer) != S_OK)
-        return WINED3DERR_INVALIDCALL;
-
-    return WINED3D_OK;
+    return IUnknown_QueryInterface(container, riid, ppContainer);
 }
 
 HRESULT WINAPI IWineD3DSurfaceImpl_GetDesc(IWineD3DSurface *iface, WINED3DSURFACE_DESC *pDesc) {
diff --git a/dlls/wined3d/volume.c b/dlls/wined3d/volume.c
index a8a9c1e..3c7c66b 100644
--- a/dlls/wined3d/volume.c
+++ b/dlls/wined3d/volume.c
@@ -142,10 +142,7 @@ HRESULT WINAPI IWineD3DVolumeImpl_GetCon
     }
 
     TRACE("Relaying to QueryInterface\n");
-    if (IUnknown_QueryInterface(This->container, riid, ppContainer) != S_OK)
-        return WINED3DERR_INVALIDCALL;
-
-    return WINED3D_OK;
+    return IUnknown_QueryInterface(This->container, riid, ppContainer);
 }
 
 HRESULT WINAPI IWineD3DVolumeImpl_GetDesc(IWineD3DVolume *iface, WINED3DVOLUME_DESC* pDesc) {