RFR: 8325326: compiler/codecache/TestStressCodeBuffers.java assertion on AIX

[Martin Doerr]

`relocate` should be called after the result of `address_constant` has been checked. Otherwise, we may run into "assert(allocates2(pc)) failed: relocation addr must be in this section".

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Commit messages:
 - 8325326: compiler/codecache/TestStressCodeBuffers.java assertion on AIX

Changes: https://git.openjdk.org/jdk/pull/17744/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17744&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325326
  Stats: 12 lines in 1 file changed: 6 ins; 2 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/17744.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17744/head:pull/17744

PR: https://git.openjdk.org/jdk/pull/17744