[gegl] Revert "gegl/buffer: set context cache rect of nohalo to 5x5px"

[Øyvind Kolås <ok src gnome org>]

commit bbff57cab1d8ad07d770ac56c01377a1808dbd59
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Oct 23 17:51:44 2017 +0200

    Revert "gegl/buffer: set context cache rect of nohalo to 5x5px"
    
    This reverts commit 3bae8f7e073dff61a5df22c41d443d007e3bcb50.
    The effect of changing NOHALO_OFFSET_0 needs further investigation
    momentarily reverting.

 gegl/buffer/gegl-sampler-nohalo.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-nohalo.c b/gegl/buffer/gegl-sampler-nohalo.c
index a953944..858dc32 100644
--- a/gegl/buffer/gegl-sampler-nohalo.c
+++ b/gegl/buffer/gegl-sampler-nohalo.c
@@ -276,7 +276,7 @@ gegl_sampler_nohalo_class_init (GeglSamplerNohaloClass *klass)
 /*
  * IMPORTANT: NOHALO_OFFSET_0 SHOULD BE AN INTEGER >= 2.
  */
-#define NOHALO_OFFSET_0 (2)
+#define NOHALO_OFFSET_0 (13)
 #define NOHALO_SIZE_0 (1+2*NOHALO_OFFSET_0)
 
 /*