[App] Get absolute path of content root in all cases.

src/xenia/app/xenia_main.cc

@@ -161,9 +161,8 @@ int xenia_main(const std::vector<std::wstring>& args) {
 #endif
       content_root = xe::join_paths(content_root, L"content");
     }
-
-    content_root = xe::to_absolute_path(content_root);
   }
+  content_root = xe::to_absolute_path(content_root);
 
   // Create the emulator but don't initialize so we can setup the window.
   auto emulator = std::make_unique<Emulator>(L"", content_root);