RFR: forge: fix type of id in GitLabHost.search

[Erik Helin]

Hi all,

please review this small patch that fixes `id` to be of correct type `int` in `GitLabHost.search`.

Thanks,
Erik

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Commit messages:
 - forge: fix id type in GitLabHost.search

Changes: https://git.openjdk.java.net/skara/pull/911/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=911&range=00
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/skara/pull/911.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/911/head:pull/911

PR: https://git.openjdk.java.net/skara/pull/911