Crash fix

source/ubl-settings-repomanager-storage-window.c

@@ -255,11 +255,13 @@ void on_storage_accept(GtkWidget *self, dictionary *dict){
     for (int i=0;i<size;i++){
         int repos_size;
         config_str repos = yon_char_parse(config(keys[i]),&repos_size,",");
+        if (repos_size){
             qsort(repos,repos_size,sizeof(char*),yon_char_parsed_compare);
             char *repos_string = yon_char_parsed_to_string(repos,repos_size,",");
             yon_config_set(keys[i],repos_string);
             free(repos_string);
             yon_char_parsed_free(repos,repos_size);
+        }
         yon_storage_remove(keys[i],g_hash_table_lookup(window->storages_copy,keys[i]),NULL);
     }
     g_hash_table_remove_all(window->storages_copy);