[gegl] buffer: pad some arrays for CMYK capability in linear sampler

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 91b75446412dda6589aa6318067f50b6d11543c5
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Nov 26 22:11:39 2018 +0100

    buffer: pad some arrays for CMYK capability in linear sampler

 gegl/buffer/gegl-sampler-linear.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-linear.c b/gegl/buffer/gegl-sampler-linear.c
index fa3b46701..cc76f86e3 100644
--- a/gegl/buffer/gegl-sampler-linear.c
+++ b/gegl/buffer/gegl-sampler-linear.c
@@ -147,8 +147,8 @@ gegl_sampler_linear_get (     GeglSampler       *self,
     /*
      * Load bottom row:
      */
-    gfloat bot_left[4];
-    gfloat bot_rite[4];
+    gfloat bot_left[5];
+    gfloat bot_rite[5];
     for (gint c = 0; c < nc; c++)
       bot_left[c] = *in_bptr++;
     for (gint c = 0; c < nc; c++)
@@ -160,7 +160,7 @@ gegl_sampler_linear_get (     GeglSampler       *self,
     {
     const gfloat w_times_z = (gfloat) 1. - ( x + w_times_y );
 
-    gfloat newval[4];
+    gfloat newval[5];
 
       for (gint c = 0; c < nc; c++)
         newval[c] =