RFR: 8254166: Zero: return-type warning in zeroInterpreter_zero.cpp [v2]

[Aleksey Shipilev]

> This breaks 11u without disabled warnings as errors, but the issue exists in head JDK as well. Might as well fix it
> everywhere.
> Testing:
>   - [x] Linux ARM32 Zero build on HEAD JDK
>   - [x] Linux ARM32 Zero build on 11u

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Added comment

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/545/files
  - new: https://git.openjdk.java.net/jdk/pull/545/files/b5167bde..95d62436

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=545&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=545&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/545.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/545/head:pull/545

PR: https://git.openjdk.java.net/jdk/pull/545