Added deferred close to 'http.File' opened (#9443) (#9461)
Added deferred close to 'http.File' opened (#9443) (#9461)

Signed-off-by: Pablo Caderno <6617672d4a494e02cbc867868bd99bc837b508c5@gmail.com>
keegancsmith/prometheus,prometheus/prometheus,prometheus/prometheus,alileza/prometheus,keegancsmith/prometheus,prometheus/prometheus,alileza/prometheus,keegancsmith/prometheus,alileza/prometheus,keegancsmith/prometheus,alileza/prometheus,prometheus/prometheus,keegancsmith/prometheus,alileza/prometheus,prometheus/prometheus