RFR: 8283306: re-resolving indirect call to non-entrant nmethod can crash

[Dean Long]

This change fixes a crash that can happen in SharedRuntime::reresolve_call_site with Graal/JVMCI.
See https://bugs.openjdk.java.net/browse/JDK-8283306 for details.

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Commit messages:
 - check relocations to avoid false positives

Changes: https://git.openjdk.java.net/jdk/pull/8528/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8528&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283306
  Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8528.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8528/head:pull/8528

PR: https://git.openjdk.java.net/jdk/pull/8528