[gegl] buffer: Clarify the docs for gegl_buffer_linear_open

[Michael Henning <mhenning src gnome org>]

commit 285ec1f002fbd201aff594b3b16fea2fa6b2afb4
Author: Michael Henning <drawoc darkrefraction com>
Date:   Tue Jun 3 19:33:58 2014 -0400

    buffer: Clarify the docs for gegl_buffer_linear_open

 gegl/buffer/gegl-buffer.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer.h b/gegl/buffer/gegl-buffer.h
index 85d5521..5b7b982 100644
--- a/gegl/buffer/gegl-buffer.h
+++ b/gegl/buffer/gegl-buffer.h
@@ -570,7 +570,7 @@ GeglBuffer * gegl_buffer_linear_new_from_data (const gpointer       data,
  *
  * Returns: a pointer to a linear memory region describing the buffer, if the
  * request is compatible with the underlying data storage direct access
- * to the underlying data is provided.
+ * to the underlying data is provided. Otherwise, it returns a copy of the data.
  */
 gpointer *      gegl_buffer_linear_open       (GeglBuffer          *buffer,
                                                const GeglRectangle *extent,