Clear heuristic candidate list without try-finally

PerfectNumbers.Core/PrimeOrderCalculator.cs

@@ -407,13 +407,12 @@ internal static partial class PrimeOrderCalculator
 
 			int capacity = config.MaxPowChecks <= 0 ? 64 : config.MaxPowChecks * 4;
 			List<ulong> candidates = AcquireHeuristicCandidateList(capacity);
-			try
-			{
 			FactorEntry[] factorArray = orderFactors.Factors!;
 			// DebugLog("Building candidates list");
 			BuildCandidates(order, factorArray, orderFactors.Count, candidates, capacity);
 			if (candidates.Count == 0)
 			{
+				candidates.Clear();
 				return false;
 			}
 
@@ -514,6 +513,7 @@ internal static partial class PrimeOrderCalculator
 						pool.Return(gpuPool, clearArray: false);
 					}
 
+					candidates.Clear();
 					result = candidate;
 					return true;
 				}
@@ -526,11 +526,7 @@ internal static partial class PrimeOrderCalculator
 				index += batchSize;
 			}
 
-			}
-			finally
-			{
 			candidates.Clear();
-			}
                         // DebugLog("No candidate confirmed");
 			return false;
 		}