storage: tiny style cleanup (add missing new line)
storage: tiny style cleanup (add missing new line)

Change-Id: I34eb2b88a18968bfced1eb14d00c78906a1a383d
Reviewed-on: https://code-review.googlesource.com/23650
Reviewed-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Jonathan Amsterdam <e3d3698b2ccd5955e4adf250d0785062d0f9018b@google.com>

googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go