[gspell] test-checker: add a comment about a unit test failing with aspell

[Sébastien Wilmet <swilmet src gnome org>]

commit 14d3b244bfe0a31eba8857db04beb5a8f975e593
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Mar 24 14:51:00 2017 +0100

    test-checker: add a comment about a unit test failing with aspell
    
    In case other people have the same problem.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=772406

 testsuite/test-checker.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/test-checker.c b/testsuite/test-checker.c
index d4af5a5..a32e7dc 100644
--- a/testsuite/test-checker.c
+++ b/testsuite/test-checker.c
@@ -101,6 +101,11 @@ test_dashes (void)
 
        checker = gspell_checker_new (lang);
 
+       /* This unit test fails with the aspell enchant backend, but aspell can
+        * be considered deprecated, it is better to use hunspell, so WONTFIX.
+        * For more details, see:
+        * https://bugzilla.gnome.org/show_bug.cgi?id=772406
+        */
        correctly_spelled = gspell_checker_check_word (checker, "spell-checking", -1, &error);
        g_assert_no_error (error);
        g_assert (correctly_spelled);