Fixed a crash with paths containing trailing spaces.

Directory.Exists removes trailing spaces before checking the folder, but
the FileSystemWatched does not.

Author: drivesmoothly

Logic/RepositoryWatcher.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
@@ -62,7 +62,7 @@ public RepositoryWatcher(string path, Boolean isBare)
 
         public void Dispose()
         {
-            _watcher.Dispose();
+            _watcher?.Dispose();
         }
 
         ~RepositoryWatcher()

Logic/ViewModel.cs

@@ -34,7 +34,7 @@ public string RepositoryPath
             get { return _repositoryPath; }
             set
             {
-                _repositoryPath = value;
+                _repositoryPath = value.TrimEnd();
                 if (IsValidGitRepository(_repositoryPath))
                 {
                     OnPropertyChanged("WindowTitle");