Еще немного рефакторинга алгоритма распределения в Jira

src/JiraTimeBot/Program.cs

@@ -1,5 +1,7 @@
 using JiraTimeBot.UI;
 using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 using System.Threading;
 using System.Windows.Forms;
 
@@ -7,19 +9,19 @@ namespace JiraTimeBot
 {
     static class Program
     {
-        private static Mutex _mutex = new Mutex(true, "{44426B3E-B901-4792-ACEA-1385D79DBAD1}");
+        private static readonly Mutex Mutex = new Mutex(true, "{44426B3E-B901-4792-ACEA-1385D79DBAD1}");
         /// <summary>
         /// The main entry point for the application.
         /// </summary>
         [STAThread]
         static void Main()
         {
-            if (_mutex.WaitOne(TimeSpan.Zero, true))
+            if (Mutex.WaitOne(TimeSpan.Zero, true))
             {
                 Application.EnableVisualStyles();
                 Application.SetCompatibleTextRenderingDefault(false);
                 Application.Run(new frmMain());
-                _mutex.ReleaseMutex();
+                Mutex.ReleaseMutex();
             }
             else
             {