[gnome-builder] vala: locator can return null

[Christian Hergert <chergert src gnome org>]

commit 8418157c0d97ee8a920367e9cf02309ceefef1ff
Author: Christian Hergert <christian hergert me>
Date:   Sat Sep 26 01:27:59 2015 -0700

    vala: locator can return null

 plugins/vala-pack/ide-vala-locator.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/vala-pack/ide-vala-locator.vala b/plugins/vala-pack/ide-vala-locator.vala
index a9c888a..92d93e6 100644
--- a/plugins/vala-pack/ide-vala-locator.vala
+++ b/plugins/vala-pack/ide-vala-locator.vala
@@ -49,7 +49,7 @@ namespace Ide {
                Location innermost_begin;
                Location innermost_end;
 
-               public Vala.Symbol locate (Vala.SourceFile file, int line, int column) {
+               public Vala.Symbol? locate (Vala.SourceFile file, int line, int column) {
                        location = Location (line, column);
                        innermost = null;
                        file.accept_children(this);