[gnome-builder] code-index: ensure dir_index is initliazed to 0

[Christian Hergert <chergert src gnome org>]

commit 3fb6bbeaf10ae4c1cd82a04457894d544e4cfb2f
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 18 07:06:09 2018 -0800

    code-index: ensure dir_index is initliazed to 0

 src/plugins/code-index/ide-code-index-index.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/code-index/ide-code-index-index.c b/src/plugins/code-index/ide-code-index-index.c
index 6a0e3a04c..4289db44c 100644
--- a/src/plugins/code-index/ide-code-index-index.c
+++ b/src/plugins/code-index/ide-code-index-index.c
@@ -495,7 +495,7 @@ ide_code_index_index_lookup_symbol (IdeCodeIndexIndex *self,
   IdeSymbolKind kind = IDE_SYMBOL_NONE;
   IdeSymbolFlags flags = IDE_SYMBOL_FLAGS_NONE;
   DzlFuzzyIndex *symbol_names = NULL;
-  const DirectoryIndex *dir_index;
+  const DirectoryIndex *dir_index = NULL;
   IdeContext *context;
   const gchar *filename;
   guint32 file_id = 0;