[seed] Fixing build warnings by avoid using deprecated/unsecure code.

[Alan Knowles <alank src gnome org>]

commit 55f2b92e3537a3158a89b75c507544800fb410b3
Author: Danilo Cesar Lemes de Paula <danilo cesar collabora co uk>
Date:   Mon Jan 11 11:28:52 2016 -0200

    Fixing build warnings by avoid using deprecated/unsecure code.

 libseed/seed-types.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libseed/seed-types.c b/libseed/seed-types.c
index d0c6281..2031589 100644
--- a/libseed/seed-types.c
+++ b/libseed/seed-types.c
@@ -1274,7 +1274,7 @@ seed_value_from_gvalue_for_signal (JSContextRef ctx, GValue * gval,
       return seed_value_from_boolean (ctx,
                                      g_value_get_boolean (gval), exception);
     case G_TYPE_CHAR:
-      return seed_value_from_char (ctx, g_value_get_char (gval), exception);
+      return seed_value_from_char (ctx, g_value_get_schar (gval), exception);
     case G_TYPE_UCHAR:
       return seed_value_from_uchar (ctx, g_value_get_uchar (gval), exception);
     case G_TYPE_INT:
@@ -1518,7 +1518,7 @@ seed_value_to_gvalue (JSContextRef ctx,
     case G_TYPE_CHAR:
       {
        g_value_init (ret, G_TYPE_CHAR);
-       g_value_set_char (ret, seed_value_to_char (ctx, val, exception));
+       g_value_set_schar (ret, seed_value_to_char (ctx, val, exception));
        return TRUE;
       }
     case G_TYPE_UCHAR: