[gegl] c2g: fix include typo for envelopes.h

[Øyvind Kolås <ok src gnome org>]

commit 4ea927ba9559442d71255d37b0e69cc520652e36
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Jun 15 17:24:52 2014 +0200

    c2g: fix include typo for envelopes.h

 operations/common/c2g.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/c2g.c b/operations/common/c2g.c
index 3bd4490..ceba8b2 100644
--- a/operations/common/c2g.c
+++ b/operations/common/c2g.c
@@ -56,7 +56,7 @@ property_double (rgamma, _("Radial Gamma"), 0.0, 8.0, 2.0,
 #include "gegl-op.h"
 #include <math.h>
 #include <stdlib.h>
-#include "envelopes2.h"
+#include "envelopes.h"
 
 #define RGAMMA 2.0