[libdazzle] suggestion-entry: fix length of text

[Christian Hergert <chergert src gnome org>]

commit 5d6fd6c2c535b86e3e4683d548e45da131bfe01a
Author: Christian Hergert <chergert redhat com>
Date:   Thu Aug 9 13:32:04 2018 -0700

    suggestion-entry: fix length of text
    
    This fixes some beeps that would be heard from Gtk due to failed length
    checks when deleting.

 src/suggestions/dzl-suggestion-entry-buffer.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/suggestions/dzl-suggestion-entry-buffer.c b/src/suggestions/dzl-suggestion-entry-buffer.c
index 155ee64..217af7e 100644
--- a/src/suggestions/dzl-suggestion-entry-buffer.c
+++ b/src/suggestions/dzl-suggestion-entry-buffer.c
@@ -119,6 +119,9 @@ dzl_suggestion_entry_buffer_get_text (GtkEntryBuffer *buffer,
       priv->text = g_string_free (str, FALSE);
     }
 
+  if (n_bytes != NULL)
+    *n_bytes = strlen (priv->text);
+
   return priv->text;
 }