fix regression: playlist name suggestion for db and pictureflow items

In 2c4c1b9, I missed the fact that we still need these,
so that slashes in names aren't interpreted as a path
separator.

Change-Id: I2df0745669c4673497a506a99e754c63dcba045e

apps/plugins/pictureflow/pictureflow.c

@@ -4256,6 +4256,7 @@ static int context_menu(void)
                     /* add a leading slash so that catalog_add_to_a_playlist
                        later prefills the name when creating a new playlist */
                     rb->snprintf(album_name, MAX_PATH, "/%s", get_album_name(center_index));
+                    rb->fix_path_part(album_name, 1, sizeof(album_name) - 2);
                     file_name = album_name;
                     attr = ATTR_DIRECTORY;
                 }

apps/tree.c

@@ -900,6 +900,7 @@ static int dirbrowse(void)
                             attr = ATTR_DIRECTORY;
                             tagtree_get_entry_name(&tc, tc.selected_item,
                                                    buf, sizeof(buf));
+                            fix_path_part(buf, 0, sizeof(buf) - 1);
                         }
                     }
                     else