[vala] codegen: Fix memory leak on ignored return values

[Jürg Billeter <juergbi src gnome org>]

commit d5e0dca9754c75b41e87ce7564c7d9cdfca377ba
Author: Jürg Billeter <j bitron ch>
Date:   Thu Oct 21 20:47:29 2010 +0200

    codegen: Fix memory leak on ignored return values

 codegen/valaccodemethodcallmodule.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/codegen/valaccodemethodcallmodule.vala b/codegen/valaccodemethodcallmodule.vala
index 2fb9f6a..deef7a5 100644
--- a/codegen/valaccodemethodcallmodule.vala
+++ b/codegen/valaccodemethodcallmodule.vala
@@ -731,7 +731,7 @@ public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
 			return;
 		}
 
-		if (expr.parent_node is ExpressionStatement) {
+		if (expr.parent_node is ExpressionStatement && !expr.value_type.is_disposable ()) {
 			ccode.add_expression (ccall_expr);
 		} else {
 			var result_type = itype.get_return_type ();