[gnome-builder] symbol-tree: use FALSE for boolean return

[Christian Hergert <chergert src gnome org>]

commit 63ab921397c5f4ed42abac9953086331764f329e
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 27 10:41:34 2015 -0700

    symbol-tree: use FALSE for boolean return

 plugins/symbol-tree/symbol-tree.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/symbol-tree/symbol-tree.c b/plugins/symbol-tree/symbol-tree.c
index 6680381..76bfc98 100644
--- a/plugins/symbol-tree/symbol-tree.c
+++ b/plugins/symbol-tree/symbol-tree.c
@@ -304,7 +304,7 @@ filter_symbols_cb (GbTree     *tree,
   if ((text = gb_tree_node_get_text (node)) != NULL)
     return ide_pattern_spec_match (spec, text);
 
-  return NULL;
+  return FALSE;
 }
 
 static void