RFR: 8341095: Possible overflow in os::Posix::print_uptime_info

[Gerard Ziemski]

This is a trivial change that will quiet Xcode only visual warning in os_posix.cpp file.

There are 31,536,000 seconds in a year, so if int is 32bits, then we have MAX int value of 2,147,483,647 so it would overflow in 68 years - unlikely to affect anyone.

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Commit messages:
 - use cast to quiet Xcode warning

Changes: https://git.openjdk.org/jdk/pull/24140/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24140&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341095
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/24140.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24140/head:pull/24140

PR: https://git.openjdk.org/jdk/pull/24140