hg: code-tools/jmh: Yak shaving: fix a few FindBugs issues.

[aleksey.shipilev at oracle.com]

Changeset: 6aa4f8ce5936
Author:    shade
Date:      2014-05-05 16:58 +0400
URL:       http://hg.openjdk.java.net/code-tools/jmh/rev/6aa4f8ce5936

Yak shaving: fix a few FindBugs issues.

! jmh-core/src/main/java/org/openjdk/jmh/generators/core/BenchmarkGenerator.java
! jmh-core/src/main/java/org/openjdk/jmh/generators/core/MethodGroup.java
! jmh-core/src/main/java/org/openjdk/jmh/generators/core/MethodInvocation.java
! jmh-core/src/main/java/org/openjdk/jmh/logic/results/SampleTimeResult.java
! jmh-core/src/main/java/org/openjdk/jmh/runner/BaseRunner.java
! jmh-core/src/main/java/org/openjdk/jmh/runner/BenchmarkRecord.java