RFR: 8298636: Fix return value in WB_CountAliveClasses and WB_GetSymbolRefcount

Tue Dec 13 08:34:17 UTC 2022

Simple change of conforming to the return type.

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Commit messages:
 - wb-return-jint

Changes: https://git.openjdk.org/jdk/pull/11643/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11643&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298636
  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/11643.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11643/head:pull/11643

PR: https://git.openjdk.org/jdk/pull/11643