RFR: 8288173: JDK-8202449 fix causes conformance test failure : api/java_util/Random/RandomGenerator/NextFloat.html

[Raffaello Giulietti]

This fixes a bug introduced with JDK-8202449.

-------------

Commit messages:
 - 8288173: JDK-8202449 fix causes conformance test failure

Changes: https://git.openjdk.org/jdk/pull/9120/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9120&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288173
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/9120.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9120/head:pull/9120

PR: https://git.openjdk.org/jdk/pull/9120