[seed] Fill in missing return values in a few Seed canvas functions

[Robert Carr <racarr src gnome org>]

commit ddffb0b0b8009d74ddb0e356d01fd26bf53c5893
Author: Vincent Untz <vuntz gnome org>
Date:   Wed May 6 16:51:47 2009 -0400

    Fill in missing return values in a few Seed canvas functions
---
 modules/canvas/seed-canvas.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/modules/canvas/seed-canvas.c b/modules/canvas/seed-canvas.c
index 87ed220..29c5a16 100644
--- a/modules/canvas/seed-canvas.c
+++ b/modules/canvas/seed-canvas.c
@@ -427,6 +427,7 @@ seed_canvas_set_miterlimit (SeedContext ctx,
   GET_CR;
 
   cairo_set_miter_limit (cr, seed_value_to_double (ctx, value, e));
+  return TRUE;
 }
 
 gboolean
@@ -447,7 +448,7 @@ seed_canvas_set_linecap (SeedContext ctx,
   g_free (line_cap);
 
   cairo_set_line_cap (cr, cap);
-
+  return TRUE;
 }
 
 gboolean
@@ -468,6 +469,7 @@ seed_canvas_set_linejoin (SeedContext ctx,
   g_free (line_join);
 
   cairo_set_line_join (cr, join);
+  return TRUE;
 }
 
 void
@@ -767,6 +769,8 @@ seed_canvas_line_to (SeedContext ctx,
   y = seed_value_to_double (ctx, arguments[1], exception);
 
   cairo_line_to (cr, x, y);
+
+  return seed_make_null (ctx);
 }
 
 SeedValue