RFR: 8273606: Zero: SPARC64 build fails with si_band type mismatch

[Aleksey Shipilev]

This is actually caught by `-Werror=format` that is enabled by default.


$  sh ./configure --with-debug-level=slowdebug --with-boot-jdk=/home/shade/Install/jdk16-16.0.2-ea/ --openjdk-target=sparc64-linux-gnu --with-sysroot=/chroots/sparc64/ --with-jvm-variants=zero
$ make images

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Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jdk/pull/5470/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5470&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273606
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5470.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5470/head:pull/5470

PR: https://git.openjdk.java.net/jdk/pull/5470