fix xcop errors

[Suban05]

No description provided.

[github-actions]

🚀 Performance Analysis

Test	Base Score	PR Score	Change	% Change	Unit	Mode
benchmarks.XmirBench.xmirToEO	171.303	144.607	-26.697	-15.58%	ms/op	Average Time
benchmarks.XmirBench.xmirToPhi	180.921	180.425	-0.496	-0.27%	ms/op	Average Time
benchmarks.XmirBench.xmirToSaltyPhi	135.646	157.485	21.839	16.10%	ms/op	Average Time

✅ Performance gain: benchmarks.XmirBench.xmirToEO is faster by 26.697 ms/op (15.58%)
✅ Performance gain: benchmarks.XmirBench.xmirToPhi is faster by 0.496 ms/op (0.27%)
⚠️ Performance loss: benchmarks.XmirBench.xmirToSaltyPhi is slower by 21.839 ms/op (16.10%)

[Suban05]

@maxonfjvipon xcop checks fail in the master brach. fixed here. please take a look