If a resource is delete from fs dialog, but the resource is currently loaded,

clear the path of the resource. Fixes #5110

tools/editor/dependency_editor.cpp

@@ -399,6 +399,7 @@ void DependencyRemoveDialog::show(const Vector<String> &to_erase) {
 
 	_fill_owners(EditorFileSystem::get_singleton()->get_filesystem());
 
+
 	if (exist) {
 		owners->show();
 		text->set_text(TTR("The files being removed are required by other resources in order for them to work.\nRemove them anyway? (no undo)"));
@@ -417,6 +418,10 @@ void DependencyRemoveDialog::ok_pressed() {
 	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
 	for (Map<String,TreeItem*>::Element *E=files.front();E;E=E->next()) {
 
+		if (ResourceCache::has(E->key())) {
+			Resource *res = ResourceCache::get(E->key());
+			res->set_path(""); //clear reference to path
+		}
 		da->remove(E->key());
 		EditorFileSystem::get_singleton()->update_file(E->key());
 	}

tools/editor/scenes_dock.cpp

@@ -1052,6 +1052,7 @@ void ScenesDock::_file_option(int p_option) {
 				if (path.ends_with("/") || !files->is_selected(i))
 					continue;
 				torem.push_back(path);
+
 			}
 
 			if (torem.empty()) {