Tiny cleanup

PerfectNumbers.Core/Gpu/MersenneNumberDivisorGpuTester.cs

@@ -32,7 +32,7 @@ public sealed class MersenneNumberDivisorGpuTester
 			list[count++] = ((ulong)i, cycle);
 		}
 
-                _divisorCandidates = count == 0 ? Array.Empty<(ulong divisor, uint cycle)>() : list[..count].ToArray();
+		_divisorCandidates = count == 0 ? [] : list[..count];
 	}
 
 	public bool IsDivisible(ulong exponent, UInt128 divisor)