[gegl] write-buffer: fix implicit declaration of gegl_node_emit_computed

[Michael Murà <mmure src gnome org>]

commit fbcf6ff4b29095d5f5e5ab40475b6a1916d2a3e4
Author: Michael Murà <batolettre gmail com>
Date:   Fri Mar 23 15:54:57 2012 +0900

    write-buffer: fix implicit declaration of gegl_node_emit_computed

 operations/common/write-buffer.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/operations/common/write-buffer.c b/operations/common/write-buffer.c
index bd8dfca..8c4da4d 100644
--- a/operations/common/write-buffer.c
+++ b/operations/common/write-buffer.c
@@ -31,6 +31,7 @@ gegl_chant_object (buffer, _("Buffer location"),
 #define GEGL_CHANT_C_FILE       "write-buffer.c"
 
 #include "gegl-chant.h"
+#include "graph/gegl-node.h"
 
 static gboolean
 process (GeglOperation       *operation,