[gnome-builder/document-manager] GbDocumentMenuButton: fix filter with empty search

[Christian Hergert <chergert src gnome org>]

commit f58fe95a45d12ebbf1961d53706bd48461b2c6e1
Author: Christian Hergert <christian hergert me>
Date:   Mon Dec 8 00:28:23 2014 -0800

    GbDocumentMenuButton: fix filter with empty search

 src/documents/gb-document-menu-button.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/documents/gb-document-menu-button.c b/src/documents/gb-document-menu-button.c
index 24f6fc2..2a65f74 100644
--- a/src/documents/gb-document-menu-button.c
+++ b/src/documents/gb-document-menu-button.c
@@ -434,9 +434,12 @@ gb_document_menu_button_filter_func (GtkListBoxRow *row,
 
   g_return_val_if_fail (GB_IS_DOCUMENT_MENU_BUTTON (button), FALSE);
 
+  str = gtk_entry_get_text (GTK_ENTRY (button->priv->search_entry));
+  if (gb_str_empty0 (str))
+    return TRUE;
+
   document = g_object_get_data (G_OBJECT (row), "GB_DOCUMENT");
   title = gb_document_get_title (document);
-  str = gtk_entry_get_text (GTK_ENTRY (button->priv->search_entry));
 
   /*
    * TODO: Replace this with a proper fuzzy search with scoring and