[vala/0.42] vala: Don't check for GLib.Variant casting in POSIX profile

[Rico Tzschichholz <ricotz src gnome org>]

commit 4c35a39bd492a07a212653c32f3bffc0fe126758
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Nov 6 14:08:03 2018 +0100

    vala: Don't check for GLib.Variant casting in POSIX profile

 vala/valacastexpression.vala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/vala/valacastexpression.vala b/vala/valacastexpression.vala
index 3d7114df0..ee39e0e73 100644
--- a/vala/valacastexpression.vala
+++ b/vala/valacastexpression.vala
@@ -176,7 +176,8 @@ public class Vala.CastExpression : Expression {
                        value_type.nullable = true;
                }
 
-               if (is_gvariant (context, inner.value_type) && !is_gvariant (context, value_type)) {
+               if (context.profile == Profile.GOBJECT
+                   && is_gvariant (context, inner.value_type) && !is_gvariant (context, value_type)) {
                        // GVariant unboxing returns owned value
                        value_type.value_owned = true;
                }