[smuxi: 5/7] Frontend-STFL: Call EngineManager.Disconnect() on exit (closes #1034).

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 763372cd6b287e507cb4dee0de62201fc2a90af2
Author: Ondřej Hošek <ondra hosek gmail com>
Date:   Sun Mar 15 01:13:20 2015 +0100

    Frontend-STFL: Call EngineManager.Disconnect() on exit (closes #1034).
    
    This ensures that the SSH tunnel, if any, is closed.

 src/Frontend-STFL/Frontend.cs |   17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)
---
diff --git a/src/Frontend-STFL/Frontend.cs b/src/Frontend-STFL/Frontend.cs
index 360511a..dfdd622 100644
--- a/src/Frontend-STFL/Frontend.cs
+++ b/src/Frontend-STFL/Frontend.cs
@@ -46,6 +46,7 @@ namespace Smuxi.Frontend.Stfl
         private static Session            _Session;
         private static UserConfig         _UserConfig;
         private static FrontendManager    _FrontendManager;
+        public static EngineManager EngineManager { get; private set; }
         
         public static event EventHandler SessionPropertyChanged;
 
@@ -191,14 +192,14 @@ namespace Smuxi.Frontend.Stfl
         
         public static void InitRemoteEngine(string engine)
         {
-            var manager = new EngineManager(_FrontendConfig,
-                                            _MainWindow.UI);
+            EngineManager = new EngineManager(_FrontendConfig,
+                                              _MainWindow.UI);
             try {
                 try {
                     Console.WriteLine(
                         _("Connecting to remote engine '{0}'..."), engine
                     );
-                    manager.Connect(engine);
+                    EngineManager.Connect(engine);
                     Console.WriteLine(_("Connection established"));
                 } catch (Exception ex) {
 #if LOG4NET
@@ -212,15 +213,15 @@ namespace Smuxi.Frontend.Stfl
                     Environment.Exit(1);
                 }
 
-                Session = manager.Session;
-                _UserConfig = manager.UserConfig;
-                _EngineVersion = manager.EngineVersion;
+                Session = EngineManager.Session;
+                _UserConfig = EngineManager.UserConfig;
+                _EngineVersion = EngineManager.EngineVersion;
                 ConnectEngineToGUI();
             } catch (Exception ex) {
 #if LOG4NET
                 _Logger.Error(ex);
 #endif
-                manager.Disconnect();
+                EngineManager.Disconnect();
                 throw;
             }
         }
@@ -274,6 +275,8 @@ namespace Smuxi.Frontend.Stfl
                         _Logger.Error("Quit(): Exception", ex);
 #endif
                     }
+                } else if (EngineManager != null) {
+                    EngineManager.Disconnect();
                 }
             }