[linux] users メトリックに 0 が投稿されない問題を修正 #866
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ログインしているユーザが 0 の場合に linux.users メトリックに 0 が投稿されない問題の修正です。
ログインしているユーザが 0 の場合
(*p)["users"] = 0で 0 を代入していますが、最後にメトリックを出力する以下の処理で int 型に対応しておらずメトリックが投稿されないため、float64 で代入しています。https://github.com/mackerelio/go-mackerel-plugin-helper/blob/3d9512468e0b00efe5bc2189eead8b4275fd8e9d/mackerel-plugin.go#L87