hg: lambda/lambda/jdk: correct cast to avoid compiler warnings

[paul.sandoz at oracle.com]

Changeset: c84f27e782f0
Author:    psandoz
Date:      2012-11-21 11:01 +0100
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/c84f27e782f0

correct cast to avoid compiler warnings

! test-ng/tests/org/openjdk/tests/java/util/stream/StreamTestDataProvider.java