[master] RFR: Fix windows build

[Roman Kennke]

As title says. We need to use one more jmp instead of jmpb in the asm routine for load_klass().

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Commit messages:
 - Use jmp instead of jmpb in load_klass asm routine

Changes: https://git.openjdk.java.net/lilliput/pull/24/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lilliput&pr=24&range=00
  Stats: 15 lines in 4 files changed: 0 ins; 11 del; 4 mod
  Patch: https://git.openjdk.java.net/lilliput/pull/24.diff
  Fetch: git fetch https://git.openjdk.java.net/lilliput pull/24/head:pull/24

PR: https://git.openjdk.java.net/lilliput/pull/24