RFR: 8268303: Incorrect casts in JfrWriterHost::write for Ticks and Tickspan

[Markus Grönlund]

Greetings,

please help review this change to remove a couple of incorrect casts.

Testing: jdk_jfr

Thanks
Markus

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Commit messages:
 - remove incorrect casts

Changes: https://git.openjdk.java.net/jdk/pull/4411/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4411&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268303
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4411.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4411/head:pull/4411

PR: https://git.openjdk.java.net/jdk/pull/4411