[svn r31] * Fixed returning through hidden pointer was unable to report back the return value

* Fixed removed some litter instructions sometimes produced by constructor calls

test/bug2.d

@@ -0,0 +1,4 @@
+module bug2;
+struct Vec { Vec barf() { return Vec(); } }
+class test { this(Vec whee) { } }
+void main() { Vec whee; new test(whee.barf()); }