refactor: slightly faster queue adaptation

[andywiecko]

Refactor and optimize queue adaptation in refinement step (likely negligible impact on performance).

Before

        lea               eax, [rdx + 2*rdx]
        cmp               eax, ecx
        sete              r8b
        lea               eax, [rdx + 2*rdx + 1]
        cmp               eax, ecx
        sete              al
        lea               edx, [rdx + 2*rdx + 2]
        cmp               edx, ecx
        sete              cl
        or                cl, al
        or                cl, r8b
        movzx             eax, cl

After

        movsxd            rax, ecx
        imul              rcx, rax, 1431655766
        mov               rax, rcx
        shr               rax, 63
        shr               rcx, 32
        add               ecx, eax
        xor               eax, eax
        cmp               ecx, edx
        sete              al