wined3d: Do not keep internal references on index buffers.

dlls/wined3d/device.c

@@ -2999,13 +2999,6 @@ static HRESULT WINAPI IWineD3DDeviceImpl_SetIndices(IWineD3DDevice *iface, IWine
         return WINED3D_OK;
     }
 
-    if (NULL != pIndexData) {
-        IWineD3DIndexBuffer_AddRef(pIndexData);
-    }
-    if (NULL != oldIdxs) {
-        IWineD3DIndexBuffer_Release(oldIdxs);
-    }
-
     /* So far only the base vertex index is tracked */
     if(BaseVertexIndex != oldBaseIndex) {
         IWineD3DDeviceImpl_MarkStateDirty(This, STATE_STREAMSRC);
@@ -4770,10 +4763,6 @@ static HRESULT WINAPI IWineD3DDeviceImpl_DrawIndexedPrimitiveUP(IWineD3DDevice *
         idxStride = 4;
     }
 
-    if (This->stateBlock->pIndexData) {
-        IWineD3DIndexBuffer_Release(This->stateBlock->pIndexData);
-    }
-
     /* Note in the following, it's not this type, but that's the purpose of streamIsUP */
     This->stateBlock->streamSource[0] = (IWineD3DVertexBuffer *)pVertexStreamZeroData;
     This->stateBlock->streamIsUP = TRUE;

dlls/wined3d/stateblock.c

@@ -233,12 +233,6 @@ static ULONG  WINAPI IWineD3DStateBlockImpl_Release(IWineD3DStateBlock *iface) {
             int counter;
             FIXME("Releasing primary stateblock\n");
 
-            /* free any index data */
-            if (This->pIndexData) {
-                IWineD3DIndexBuffer_Release(This->pIndexData);
-                This->pIndexData = NULL;
-            }
-
             /* NOTE: according to MSDN: The application is responsible for making sure the texture references are cleared down */
             for (counter = 0; counter < GL_LIMITS(sampler_stages); counter++) {
                 if (This->textures[counter]) {