hg: graal/graal: fixed some findbugs issues

[doug.simon at oracle.com]

Changeset: 0d5923064a88
Author:    Doug Simon <doug.simon at oracle.com>
Date:      2014-03-15 10:28 +0100
URL:       http://hg.openjdk.java.net/graal/graal/rev/0d5923064a88

fixed some findbugs issues

! graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/phases/WriteBarrierVerificationPhase.java
! graal/com.oracle.graal.phases/src/com/oracle/graal/phases/util/GraphOrder.java
! graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/codewriter/AbstractCodeWriter.java
! graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeCodeGenerator.java