Do not remove tray icon when WM_OVPN_STOPALL is processed

- commit f8a243fbe introduced removing the tray icon during
  the wait for exit to avoid further user interaction. This
  is done in StopAllOpenVPN(). However, this function is also
  reused for processing WM_OVPN_STOPALL message received from
  a second instance via --comamnd disconnect_all. In this case
  the tray icon should not be removed as we are not exiting.

Fixes issue #607

Signed-off-by: Selva Nair <selva.nair@gmail.com>

main.c

@@ -353,11 +353,14 @@ int WINAPI _tWinMain (HINSTANCE hThisInstance,
 
 
 static void
-StopAllOpenVPN()
+StopAllOpenVPN(bool exiting)
 {
     int i;
 
-    RemoveTrayIcon();
+    if (exiting)
+    {
+        RemoveTrayIcon();
+    }
 
     /* Stop all connections started by us -- we leave persistent ones
      * at their current state. Use the disconnect menu to put them into
@@ -451,7 +454,9 @@ HandleCopyDataMessage(const COPYDATASTRUCT *copy_data)
         ShowWindow(c->hwndStatus, SW_SHOW);
     }
     else if(copy_data->dwData == WM_OVPN_STOPALL)
-        StopAllOpenVPN();
+    {
+        StopAllOpenVPN(false);
+    }
     else if(copy_data->dwData == WM_OVPN_SILENT && str)
     {
         if (_wtoi(str) == 0)
@@ -680,7 +685,7 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 
     case WM_DESTROY:
       WTSUnRegisterSessionNotification(hwnd);
-      StopAllOpenVPN();
+      StopAllOpenVPN(true);
       OnDestroyTray();          /* Remove Tray Icon and destroy menus */
       PostQuitMessage (0);	/* Send a WM_QUIT to the message queue */
       break;
@@ -690,7 +695,7 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 
     case WM_ENDSESSION:
       SaveAutoRestartList();
-      StopAllOpenVPN();
+      StopAllOpenVPN(true);
       OnDestroyTray();
       break;
 
@@ -980,7 +985,7 @@ ErrorExit(int exit_code, const wchar_t *msg)
                       MB_OK | MB_SETFOREGROUND | MB_ICONERROR | MBOX_RTL_FLAGS, GetGUILanguage());
     if (o.hWnd)
     {
-        StopAllOpenVPN();
+        StopAllOpenVPN(true);
         PostQuitMessage(exit_code);
     }
     else