[gnome-builder] highlighter: allow NULL buffer

[Christian Hergert <chergert src gnome org>]

commit 45f74edc0152eb9ff3b91466c2510a18ccdf9769
Author: Christian Hergert <christian hergert me>
Date:   Sun May 3 14:51:34 2015 -0700

    highlighter: allow NULL buffer

 libide/ide-highlight-engine.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libide/ide-highlight-engine.c b/libide/ide-highlight-engine.c
index a025abd..f834cad 100644
--- a/libide/ide-highlight-engine.c
+++ b/libide/ide-highlight-engine.c
@@ -528,7 +528,7 @@ ide_highlight_engine_set_buffer (IdeHighlightEngine *self,
                                  IdeBuffer          *buffer)
 {
   g_return_if_fail (IDE_IS_HIGHLIGHT_ENGINE (self));
-  g_return_if_fail (IDE_IS_BUFFER (buffer));
+  g_return_if_fail (!buffer || IDE_IS_BUFFER (buffer));
 
   if (self->buffer != buffer)
     {