[gnome-builder] code-index: don't leak source directory GFile

[Christian Hergert <chergert src gnome org>]

commit 1dc6637b460853c554e22da568a08ddc7c851939
Author: Christian Hergert <chergert redhat com>
Date:   Tue Aug 7 15:30:05 2018 -0700

    code-index: don't leak source directory GFile

 src/plugins/code-index/ide-code-index-index.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/code-index/ide-code-index-index.c b/src/plugins/code-index/ide-code-index-index.c
index 12371c110..84238773e 100644
--- a/src/plugins/code-index/ide-code-index-index.c
+++ b/src/plugins/code-index/ide-code-index-index.c
@@ -79,6 +79,7 @@ directory_index_free (DirectoryIndex *data)
   g_clear_object (&data->symbol_names);
   g_clear_object (&data->symbol_keys);
   g_clear_object (&data->directory);
+  g_clear_object (&data->source_directory);
   g_slice_free (DirectoryIndex, data);
 
   DZL_COUNTER_DEC (code_indexes);