Crash fix

source/ubl-settings-repomanager.c

@@ -117,6 +117,7 @@ void on_file_chooser_entry_changed(GtkEntry *self, file_chooser_window *window){
 void on_file_chooser_file_activate(GtkFileChooser *self, repo_add_window *window){
     GtkTreeIter iter;
     GSList *list = gtk_file_chooser_get_filenames(self);
+    if (list){
         for (int i=0;i<g_slist_length(list);i++){
             char *path = g_slist_nth_data(list,i);
             char *filename = yon_char_new(path);
@@ -126,6 +127,7 @@ void on_file_chooser_file_activate(GtkFileChooser *self, repo_add_window *window
             free(filename);
             g_slist_free(list);
         }
+    }
     gtk_widget_destroy(gtk_widget_get_toplevel(GTK_WIDGET(self)));
 }
 
@@ -1530,7 +1532,9 @@ void yon_combo_box_text_set_signs(GtkComboBoxText *target){
     gtk_combo_box_text_append_text(target,DO_NOT_SIGN_LABEL);
     for (int i=0;i<main_config.signs_size;i++){
         char *temp = yon_char_new(main_config.signs[i]);
+        if (strstr(temp,"<"))
         free(yon_char_divide_search(temp,"<",-1));
+        if (strstr(temp,">"))
         yon_char_remove_last_symbol(temp,'>');
         gtk_combo_box_text_append(target,temp,main_config.signs[i]);
         free(temp);