[PATCH] d3d10: Avoid casts from COM object to interface

[Michael Stefaniuc]

Signed-off-by: Michael Stefaniuc 
---
 dlls/d3d10/effect.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/dlls/d3d10/effect.c b/dlls/d3d10/effect.c
index 2390eeeb8d..439833485d 100644
--- a/dlls/d3d10/effect.c
+++ b/dlls/d3d10/effect.c
@@ -2716,14 +2716,14 @@ static struct ID3D10EffectConstantBuffer * STDMETHODCALLTYPE d3d10_effect_GetCon
     if (index >= This->local_buffer_count)
     {
         WARN("Invalid index specified\n");
-        return (ID3D10EffectConstantBuffer *)&null_local_buffer;
+        return (ID3D10EffectConstantBuffer *)&null_local_buffer.ID3D10EffectVariable_iface;
     }

l = &This->local_buffers[index];

TRACE("Returning buffer %p, %s.\n", l, debugstr_a(l->name));

-    return (ID3D10EffectConstantBuffer *)l;
+    return (ID3D10EffectConstantBuffer *)&l->ID3D10EffectVariable_iface;
 }

static struct ID3D10EffectConstantBuffer * STDMETHODCALLTYPE d3d10_effect_GetConstantBufferByName(ID3D10Effect *iface,
@@ -2741,13 +2741,13 @@ static struct ID3D10EffectConstantBuffer * STDMETHODCALLTYPE d3d10_effect_GetCon
         if (l->name && !strcmp(l->name, name))
         {
             TRACE("Returning buffer %p.\n", l);
-            return (ID3D10EffectConstantBuffer *)l;
+            return (ID3D10EffectConstantBuffer *)&l->ID3D10EffectVariable_iface;
         }
     }

WARN("Invalid name specified\n");

-    return (ID3D10EffectConstantBuffer *)&null_local_buffer;
+    return (ID3D10EffectConstantBuffer *)&null_local_buffer.ID3D10EffectVariable_iface;
 }

static struct ID3D10EffectVariable * STDMETHODCALLTYPE d3d10_effect_GetVariableByIndex(ID3D10Effect *iface, UINT index)
@@ -3529,7 +3529,7 @@ static struct ID3D10EffectConstantBuffer * STDMETHODCALLTYPE d3d10_effect_variab

TRACE("iface %p\n", iface);

-    return (ID3D10EffectConstantBuffer *)This->buffer;
+    return (ID3D10EffectConstantBuffer *)&This->buffer->ID3D10EffectVariable_iface;
 }

static struct ID3D10EffectScalarVariable * STDMETHODCALLTYPE d3d10_effect_variable_AsScalar(