Acceptance Test tweak

Author: gbiellem

src/ServiceControl.AcceptanceTests/AcceptanceTest.cs

@@ -215,7 +215,7 @@ static void Delete(string path)
                     Directory.SetAccessControl(path, directorySecurity);
                 }
 
-                if (!Directory.GetFiles(path).Any())
+                if (! (Directory.GetFiles(path).Any() || Directory.GetDirectories(path).Any()))
                 {
                     Directory.Delete(path);
                 }