Fix the pool size log to reflect the correct size when the env variable is not set (#172)

Author: daxian-dbw

src/PowerShell/PowerShellManagerPool.cs

@@ -31,15 +31,14 @@ internal class PowerShellManagerPool
         internal PowerShellManagerPool(MessagingStream msgStream)
         {
             string upperBound = Environment.GetEnvironmentVariable("PSWorkerInProcConcurrencyUpperBound");
-            RpcLogger.WriteSystemLog(string.Format(PowerShellWorkerStrings.LogConcurrencyUpperBound, upperBound));
-
             if (string.IsNullOrEmpty(upperBound) || !int.TryParse(upperBound, out _upperBound))
             {
                 _upperBound = 1;
             }
 
             _msgStream = msgStream;
             _pool = new BlockingCollection<PowerShellManager>(_upperBound);
+            RpcLogger.WriteSystemLog(string.Format(PowerShellWorkerStrings.LogConcurrencyUpperBound, _upperBound.ToString()));
         }
 
         /// <summary>
@@ -84,7 +83,7 @@ internal PowerShellManager CheckoutIdleWorker(StreamingMessage request, AzFuncti
                     logger.SetContext(requestId, invocationId);
                     psManager = new PowerShellManager(logger);
 
-                    RpcLogger.WriteSystemLog(string.Format(PowerShellWorkerStrings.LogNewPowerShellManagerCreated, _poolSize));
+                    RpcLogger.WriteSystemLog(string.Format(PowerShellWorkerStrings.LogNewPowerShellManagerCreated, _poolSize.ToString()));
                 }
                 else
                 {