[gnome-builder] highlight-engine: short circuit when not enabled

[Christian Hergert <chergert src gnome org>]

commit 63614ec2568cb19dec43a642ef1bd8c97fd91682
Author: Christian Hergert <chergert redhat com>
Date:   Thu Nov 10 18:40:35 2016 -0800

    highlight-engine: short circuit when not enabled

 libide/highlighting/ide-highlight-engine.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/libide/highlighting/ide-highlight-engine.c b/libide/highlighting/ide-highlight-engine.c
index 2c26eeb..440d51b 100644
--- a/libide/highlighting/ide-highlight-engine.c
+++ b/libide/highlighting/ide-highlight-engine.c
@@ -521,6 +521,9 @@ ide_highlight_engine__buffer_insert_text_cb (IdeHighlightEngine *self,
   g_assert (text);
   g_assert (IDE_IS_BUFFER (buffer));
 
+  if (!self->enabled)
+    IDE_EXIT;
+
   /*
    * Backward the begin iter len characters from location
    * (location points to the end of the string) in order to get
@@ -551,6 +554,9 @@ ide_highlight_engine__buffer_delete_range_cb (IdeHighlightEngine *self,
   g_assert (range_begin);
   g_assert (IDE_IS_BUFFER (buffer));
 
+  if (!self->enabled)
+    IDE_EXIT;
+
   /*
    * No need to use the range_end since everything that
    * was after range_end will now be after range_begin