[gegl] gegl/buffer: use epsiloned float comparison

[Øyvind Kolås <ok src gnome org>]

commit e2840d046a891d5c252f985f4270b9836ca589d5
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Dec 27 11:29:00 2017 +0100

    gegl/buffer: use epsiloned float comparison

 gegl/buffer/gegl-buffer-access.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index abfcc56..fb131b8 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -1480,7 +1480,7 @@ _gegl_buffer_get_unlocked (GeglBuffer          *buffer,
       sample_rect.width  = factor * (x2 - x1);
       sample_rect.height = factor * (y2 - y1);
 
-      if (scale == 1.0)
+      if (GEGL_FLOAT_EQUAL (scale, 1.0))
         {
           gegl_buffer_iterate_read_dispatch (buffer, &sample_rect,
                                              (guchar*)dest_buf, rowstride,