[libFuzzer] Migrate to the new exception syscalls on Fuchsia

This is part of the transition to the new Fuchsia exception syscalls
signature.

Differential Revision: https://reviews.llvm.org/D63897

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@364594 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed