[RPCRT4] Sync with Wine Staging 1.7.55. CORE-10536

[reactos.git] / reactos / dll / win32 / rpcrt4 / cstub.c

diff --git a/reactos/dll/win32/rpcrt4/cstub.c b/reactos/dll/win32/rpcrt4/cstub.c
index ec4b0fc..7c78f1c 100644 (file)
--- a/reactos/dll/win32/rpcrt4/cstub.c
+++ b/reactos/dll/win32/rpcrt4/cstub.c
@@ -41,7 +41,7 @@ typedef struct
 
 static inline cstdstubbuffer_delegating_t *impl_from_delegating( IRpcStubBuffer *iface )
 {
-    return (cstdstubbuffer_delegating_t*)((char *)iface - FIELD_OFFSET(cstdstubbuffer_delegating_t, stub_buffer));
+    return CONTAINING_RECORD(iface, cstdstubbuffer_delegating_t, stub_buffer);
 }
 
 HRESULT CStdStubBuffer_Construct(REFIID riid,