[seed] Fixing cairo_curve_to method

[Alan Knowles <alank src gnome org>]

commit a17bdc78aa8d6f8342b482c0fc58a32bcc3bf5c1
Author: Danilo Cesar Lemes de Paula <danilo cesar collabora co uk>
Date:   Mon Jan 11 16:28:17 2016 -0200

    Fixing cairo_curve_to method
    
    y1 value wasn't being used. y2 was being used twice.

 modules/cairo/seed-cairo.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/modules/cairo/seed-cairo.c b/modules/cairo/seed-cairo.c
index 09ec4c4..cdb9b5c 100644
--- a/modules/cairo/seed-cairo.c
+++ b/modules/cairo/seed-cairo.c
@@ -1201,7 +1201,7 @@ seed_cairo_curve_to (SeedContext ctx,
   x3 = seed_value_to_double (ctx, arguments[4], exception);
   y3 = seed_value_to_double (ctx, arguments[5], exception);
 
-  cairo_curve_to (cr, x1, y2, x2, y2, x3, y3);
+  cairo_curve_to (cr, x1, y1, x2, y2, x3, y3);
   return seed_make_undefined (ctx);
 }
 
@@ -1228,7 +1228,7 @@ seed_cairo_rel_curve_to (SeedContext ctx,
   x3 = seed_value_to_double (ctx, arguments[4], exception);
   y3 = seed_value_to_double (ctx, arguments[5], exception);
 
-  cairo_rel_curve_to (cr, x1, y2, x2, y2, x3, y3);
+  cairo_rel_curve_to (cr, x1, y1, x2, y2, x3, y3);
   return seed_make_undefined (ctx);
 }