[gtksourceview] Small optimization for a common case (no marks)

[Paolo Borelli <pborelli src gnome org>]

commit ca0dcf67bfe3028404b836b98c04f68aa7105aae
Author: Paolo Borelli <pborelli gnome org>
Date:   Sun Jan 27 11:31:32 2013 +0100

    Small optimization for a common case (no marks)
    
    This function is called at every redraw, so it is worth catching this common case

 gtksourceview/gtksourcebuffer.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcebuffer.c b/gtksourceview/gtksourcebuffer.c
index 45c95b9..0e66e52 100644
--- a/gtksourceview/gtksourcebuffer.c
+++ b/gtksourceview/gtksourcebuffer.c
@@ -2067,6 +2067,9 @@ gtk_source_buffer_get_source_marks_at_iter (GtkSourceBuffer *buffer,
 
 	g_return_val_if_fail (iter != NULL, NULL);
 
+	if (buffer->priv->source_marks->len == 0)
+		return NULL;
+
 	res = NULL;
 	marks = gtk_text_iter_get_marks (iter);
 
@@ -2114,6 +2117,9 @@ gtk_source_buffer_get_source_marks_at_line (GtkSourceBuffer *buffer,
 
  	g_return_val_if_fail (GTK_SOURCE_IS_BUFFER (buffer), NULL);
 
+	if (buffer->priv->source_marks->len == 0)
+		return NULL;
+
 	gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (buffer),
 					  &iter, line);