[vala] codegen: Fix C warning when deserializing GVariant arrays

[Jürg Billeter <juergbi src gnome org>]

commit 221589b94ad9ced56e53686eaf435d579ef5a845
Author: Jürg Billeter <j bitron ch>
Date:   Wed Dec 22 08:42:51 2010 +0100

    codegen: Fix C warning when deserializing GVariant arrays

 codegen/valagvariantmodule.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/codegen/valagvariantmodule.vala b/codegen/valagvariantmodule.vala
index 87453a9..2b968aa 100644
--- a/codegen/valagvariantmodule.vala
+++ b/codegen/valagvariantmodule.vala
@@ -315,7 +315,7 @@ public class Vala.GVariantModule : GAsyncModule {
 		iter_call = new CCodeFunctionCall (new CCodeIdentifier ("g_variant_iter_next_value"));
 		iter_call.add_argument (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, new CCodeIdentifier (subiter_name)));
 
-		var cforcond = new CCodeAssignment (new CCodeIdentifier (element_name), iter_call);
+		var cforcond = new CCodeBinaryExpression (CCodeBinaryOperator.INEQUALITY, new CCodeAssignment (new CCodeIdentifier (element_name), iter_call), new CCodeConstant ("NULL"));
 		var cforiter = new CCodeUnaryExpression (CCodeUnaryOperator.POSTFIX_INCREMENT, new CCodeIdentifier ("%s_length%d".printf (temp_name, dim)));
 		ccode.open_for (null, cforcond, cforiter);