Piscal Ssh Client cleanup

Core/Remote/PiscalSshClient.cs

@@ -29,7 +29,7 @@ namespace LeafWeb.Core.Remote
 		private const string StatusRunning = "running";
 		private const string StatusNotStarted = "not started";
 
-		private readonly ILog _logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+		private readonly ILog _logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod()?.DeclaringType);
 
         private readonly int _connectionRetryCount = 3;
         private readonly Policy _connectRetryPolicy;
@@ -37,11 +37,11 @@ namespace LeafWeb.Core.Remote
 		public PiscalSshClient(string connectionString)
 		{
             if (string.IsNullOrEmpty(connectionString))
-                throw new ArgumentNullException("connectionString");
+                throw new ArgumentNullException(nameof(connectionString));
 			var conn = new DbConnectionStringBuilder {ConnectionString = connectionString};
 
 			_host = conn["host"] as string;
-            _port = int.Parse(conn.ContainsKey("port") ? conn["port"] as string : "22"); // default 22
+            _port = int.Parse(conn["port"] as string ?? "22"); // default 22
 			var username = conn["username"] as string;
 			var password = conn["password"] as string;
 			_connectionInfo = new PasswordConnectionInfo(_host, _port, username, password);