[gegl] gegl:photocopy: use GEGL_OP_FILTER as base class instead of GEGL_OP_AREA_FILTER

[Thomas Manni <tmanni src gnome org>]

commit 735228750f5f672a1a0f914b1d6a1042be25c6f2
Author: Thomas Manni <thomas manni free fr>
Date:   Fri Aug 25 13:22:16 2017 +0200

    gegl:photocopy: use GEGL_OP_FILTER as base class instead of GEGL_OP_AREA_FILTER

 operations/common/photocopy.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/photocopy.c b/operations/common/photocopy.c
index e0033ce..ad34123 100644
--- a/operations/common/photocopy.c
+++ b/operations/common/photocopy.c
@@ -36,7 +36,7 @@ property_double (white, _("Percent White"), 0.2)
 
 #else
 
-#define GEGL_OP_AREA_FILTER
+#define GEGL_OP_FILTER
 #define GEGL_OP_NAME     photocopy
 #define GEGL_OP_C_SOURCE photocopy.c