[vala] Fix crash introduced by previous patch.

[Luca Bruno <lucabru src gnome org>]

commit 3e813d0c82f6098967460aef7a22e30703c6a3db
Author: Luca Bruno <lucabru src gnome org>
Date:   Fri May 10 21:53:33 2013 +0200

    Fix crash introduced by previous patch.

 codegen/valaccodemethodcallmodule.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/codegen/valaccodemethodcallmodule.vala b/codegen/valaccodemethodcallmodule.vala
index 6bc87cb..b30422a 100644
--- a/codegen/valaccodemethodcallmodule.vala
+++ b/codegen/valaccodemethodcallmodule.vala
@@ -714,7 +714,7 @@ public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
                        }
                }
 
-               if (get_ccode_type (m) != null && get_ccode_type (m) != get_ccode_name (m.return_type)) {
+               if (m != null && get_ccode_type (m) != null && get_ccode_type (m) != get_ccode_name 
(m.return_type)) {
                        // Bug 699956: Implement cast for method return type if [CCode type=] annotation is 
specified
                        ccall_expr = new CCodeCastExpression (ccall_expr, get_ccode_name (m.return_type));
                }