closure bug: carry along outnamed flag.

R=ken
OCL=26930
CL=26930

src/cmd/gc/dcl.c

@@ -573,6 +573,7 @@ funclit1(Type *type, Node *body)
 		out = rev(out);
 
 		ft = functype(N, in, out);
+		ft->outnamed = type->outnamed;
 	}
 
 	// declare function.