[gegl] transform: don't leak sampler object when using a NEAREST sampler

[Ell <ell src gnome org>]

commit ba2635c6f2362963470a95098bc910a10d695767
Author: Ell <ell_se yahoo com>
Date:   Sun Jun 17 00:45:41 2018 -0400

    transform: don't leak sampler object when using a NEAREST sampler

 operations/transform/transform-core.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/operations/transform/transform-core.c b/operations/transform/transform-core.c
index 20f7f6f4a..679d6abcc 100644
--- a/operations/transform/transform-core.c
+++ b/operations/transform/transform-core.c
@@ -1408,6 +1408,7 @@ transform_generic (GeglOperation       *operation,
         w_start += inverse.coeff [2][1];
       } while (--y);
     }
+
   g_object_unref (sampler);
 }
 
@@ -1544,6 +1545,8 @@ transform_nearest (GeglOperation       *operation,
         w_start += inverse.coeff [2][1];
       } while (--y);
     }
+
+  g_object_unref (sampler);
 }
 
 static inline gboolean is_zero (const gdouble f)