Merge pull request #395 from github/fixes/394-clone-dialog-validation

Correctly check for existing repo in clone dialog.

Author: shana

src/GitHub.App/ViewModels/RepositoryCloneViewModel.cs

@@ -171,16 +171,14 @@ IObservable<Unit> OnCloneRepository(object state)
 
         bool IsAlreadyRepoAtPath(string path)
         {
+            Debug.Assert(path != null, "RepositoryCloneViewModel.IsAlreadyRepoAtPath cannot be passed null as a path parameter.");
+
             bool isAlreadyRepoAtPath = false;
 
             if (SelectedRepository != null)
             {
-                var validationResult = BaseRepositoryPathValidator.ValidationResult;
-                if (validationResult != null && validationResult.IsValid)
-                {
-                    string potentialPath = Path.Combine(path, SelectedRepository.Name);
-                    isAlreadyRepoAtPath = operatingSystem.Directory.Exists(potentialPath);
-                }
+                string potentialPath = Path.Combine(path, SelectedRepository.Name);
+                isAlreadyRepoAtPath = operatingSystem.Directory.Exists(potentialPath);
             }
 
             return isAlreadyRepoAtPath;