[vala/0.10] codegen: Fix critical on unsupported struct field

[Jürg Billeter <juergbi src gnome org>]

commit efa36afb139f02ffb87fdb3997eb651190c01c5b
Author: Jürg Billeter <j bitron ch>
Date:   Wed Oct 6 20:22:16 2010 +0200

    codegen: Fix critical on unsupported struct field

 codegen/valaccodestructmodule.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valaccodestructmodule.vala b/codegen/valaccodestructmodule.vala
index 84697a5..4630f39 100644
--- a/codegen/valaccodestructmodule.vala
+++ b/codegen/valaccodestructmodule.vala
@@ -263,6 +263,10 @@ public class Vala.CCodeStructModule : CCodeBaseModule {
 					var ma = new MemberAccess (this_access, f.name);
 					ma.symbol_reference = f;
 					copy = get_ref_cexpression (f.variable_type, copy, ma, f);
+					if (copy == null) {
+						// error case, continue to avoid critical
+						continue;
+					}
 				}
 				var dest = new CCodeMemberAccess.pointer (new CCodeIdentifier ("dest"), f.name);