[C++] MSVC is complaining about uncaptured variables

[asfimport]

Fix up shortly.

Reporter: Phillip Cloud / @cpcloud
Assignee: Phillip Cloud / @cpcloud

PRs and other links:

• GitHub Pull Request #1622

_{Note: This issue was originally created as ARROW-2169. Please see the migration documentation for further details.}

[asfimport]

Phillip Cloud / @cpcloud:
Issue resolved by pull request 1622
#1622