RFR: 8294053: Unneeded local variable in handle_safefetch()

[Fredrik Bredberg]

The input argument "pc" is shadowed by a local variable with the same type and name, and is initialized to the same value as is passed into the handle_safefetch() function by its callers. The local "pc" variable can therefore be removed from handle_safefetch().

Tested tier1, tier2 and  tier3 without any new problems.

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Commit messages:
 - Removed unneeded local pc variable in handle_safefetch().

Changes: https://git.openjdk.org/jdk/pull/10373/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10373&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294053
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10373.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10373/head:pull/10373

PR: https://git.openjdk.org/jdk/pull/10373