Build fix

source/ubl-settings-update.c

@@ -1444,7 +1444,7 @@ char *yon_password_hash_get(password_window *window){
         if (yon_char_is_empty(password_repeat)){
             yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),EMPTY_IMPORTANT_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);
             yon_ubl_status_highlight_incorrect(window->RepeatPasswordEntry);
-            return;
+            return NULL;
         }
         if (strcmp(password,password_repeat)){
             yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),PASSWORD_MISMATCH_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);