Fix several memory leaks.

grub-core/gfxmenu/font.c

@@ -70,6 +70,8 @@ grub_font_draw_string (const char *str, grub_font_t font,
 	return err;
     }
 
+  for (ptr = visual; ptr < visual + visual_len; ptr++)
+    grub_free (ptr->combining);
   grub_free (visual);
 
   return GRUB_ERR_NONE;

grub-core/gfxmenu/gfxmenu.c

@@ -85,7 +85,7 @@ grub_gfxmenu_try (int entry, grub_menu_t menu, int nested)
       || cached_view->screen.width != mode_info.width
       || cached_view->screen.height != mode_info.height)
     {
-      grub_free (cached_view);
+      grub_gfxmenu_view_destroy (cached_view);
       /* Create the view.  */
       cached_view = grub_gfxmenu_view_new (full_theme_path ? : theme_path,
 					   mode_info.width,

grub-core/gfxmenu/gui_list.c

@@ -83,7 +83,10 @@ list_destroy (void *vself)
     self->selected_item_box->destroy (self->selected_item_box);
   if (self->icon_manager)
     grub_gfxmenu_icon_manager_destroy (self->icon_manager);
-
+  if (self->scrollbar_thumb)
+    self->scrollbar_thumb->destroy (self->scrollbar_thumb);
+  if (self->scrollbar_frame)
+    self->scrollbar_frame->destroy (self->scrollbar_frame);
   grub_free (self);
 }
 

grub-core/gfxmenu/gui_progress_bar.c

@@ -185,6 +185,7 @@ draw_text (grub_gui_progress_bar_t self)
       int y = ((height - grub_font_get_descent (font)) / 2
                + grub_font_get_ascent (font) / 2);
       grub_font_draw_string (text, font, text_color, x, y);
+      grub_free (text);
     }
 }