mov     eax, [esi]      ; eax = chunk->flink
	mov     ecx, [esi+4]    ; ecx = chunk->blink
	mov     edx, [ecx]      ; edx = chunk->blink->flink
	cmp     edx, [eax+4]    ; chunk->blink->flink == chunk->flink->blink
	jnz     HeapCorruption
	cmp     edx, esi        ; chunk->blink->flink == entry
	jnz     HeapCorruption
	mov     [ecx], eax
	mov     [eax+4], ecx