When selector goes up from the root directory, stay in the root

Previously the selector would exit, but I don't see the logic in that.

src/selector.cpp

@@ -191,17 +191,11 @@ int Selector::exec(int startSelection) {
 				// ...fall through...
 			case InputManager::LEFT:
 				if (showDirectories) {
-					string oldDir = dir;
 					dir = parentDir(dir);
-					if (dir == "/" && oldDir == "/") {
-						close = true;
-						result = false;
-					} else {
 					selected = 0;
 					firstElement = 0;
 					prepare(fl);
 				}
-				}
 				break;
 
 			case InputManager::ACCEPT: