d3d9: Check for a NULL shader in IDirect3DDevice9Impl_GetVertexShader

before getting the parent.

d3d9: Check for a NULL shader in IDirect3DDevice9Impl_GetVertexShader
0a0e948b · H. Verbeet · Alexandre Julliard · b05340a5 · 0a0e948b
Commit 0a0e948b authored Dec 14, 2005 by H. Verbeet Committed by Alexandre Julliard Dec 14, 2005
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vertexshader.c dlls/d3d9/vertexshader.c +1 -1

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--- a/dlls/d3d9/vertexshader.c
+++ b/dlls/d3d9/vertexshader.c
@@ -148,7 +148,7 @@ HRESULT WINAPI IDirect3DDevice9Impl_GetVertexShader(LPDIRECT3DDEVICE9 iface, IDi

    TRACE("(%p) : Relay  device@%p\n", This, This->WineD3DDevice);
    hrc = IWineD3DDevice_GetVertexShader(This->WineD3DDevice, &pShader);
-    if(hrc == D3D_OK){
+    if(hrc == D3D_OK && pShader != NULL){
       hrc = IWineD3DVertexShader_GetParent(pShader, (IUnknown **)ppShader);
       IWineD3DVertexShader_Release(pShader);
    } else {