[jdk11u-dev] RFR: 8247895: SHA1PRNGReseed.java is calling setSeed(0)

[Goetz Lindenmaier]

I backport this for parity with 11.0.20-oracle.

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Commit messages:
 - Backport 5a51d709872175810393cdfa6eac051156ca3595

Changes: https://git.openjdk.org/jdk11u-dev/pull/1987/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1987&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8247895
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1987.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1987/head:pull/1987

PR: https://git.openjdk.org/jdk11u-dev/pull/1987