[devhelp] add fixme comment

[Frederic Peters <fpeters src gnome org>]

commit cdf471ac9730ecf3e5b7e6c837505d9236884d83
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat May 23 20:31:12 2015 +0200

    add fixme comment

 src/dh-book-manager.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/dh-book-manager.c b/src/dh-book-manager.c
index c303bd0..3d5e6ff 100644
--- a/src/dh-book-manager.c
+++ b/src/dh-book-manager.c
@@ -554,6 +554,7 @@ book_manager_book_deleted_cb (DhBook   *book,
         li = g_list_find (priv->books, book);
         if (li) {
                 /* Decrement language count */
+                /* FIXME */
                 book_manager_inc_language (book_manager,
                                            dh_book_get_language (book));