WIP crash fix

source/ubl-settings-repomanager.c

@@ -1414,9 +1414,9 @@ void on_main_tree_selection_changed(GtkWidget *self, main_window *widgets){
                         gtk_list_store_append(widgets->RepoFileList,&itar);
                         gtk_list_store_set(widgets->RepoFileList,&itar,1,level[i],-1);
                     }
-                    free(repo_string);
-                    free(archs_string);
-                    free(info);
+                    if (!yon_char_is_empty(repo_string))free(repo_string);
+                    if (!yon_char_is_empty(archs_string)) free(archs_string);
+                    if (!yon_char_is_empty(info))free(info);
                     yon_char_parsed_free(repos,size);
                     yon_char_parsed_free(archs,arch_size);
                 }