[nautilus/wip/oholy/initialize-autofree] search-engine-tracker: Explicitly initialize g_autofree variable

[Ondrej Holy <oholy src gnome org>]

commit df2354c65b3f43978ad3a3d3afc05a221367d776
Author: Ondrej Holy <oholy redhat com>
Date:   Mon Dec 21 12:45:56 2020 +0100

    search-engine-tracker: Explicitly initialize g_autofree variable
    
    The filtered_search_text variable is not explicitly initialized
    although it is mandatory when g_autofree is used. Consequently, the
    following warning is shown: "warning: ‘filtered_search_text’ may be
    used uninitialized in this function". Let's explicitly initialize the
    variable to get rid of that warning.

 src/nautilus-search-engine-tracker.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/nautilus-search-engine-tracker.c b/src/nautilus-search-engine-tracker.c
index 9ebac0b28..a4ec78758 100644
--- a/src/nautilus-search-engine-tracker.c
+++ b/src/nautilus-search-engine-tracker.c
@@ -396,7 +396,7 @@ nautilus_search_engine_tracker_start (NautilusSearchProvider *provider)
     if (tracker->fts_enabled && *search_text)
     {
         /* Use fts:match only for content search to not lose some filename results due to stop words. */
-        g_autofree gchar *filtered_search_text;
+        g_autofree gchar *filtered_search_text = NULL;
 
         filtered_search_text = filter_alnum_strdup (search_text);
         g_string_append_printf (sparql,