Merge pull request dotnet/corefx#10038 from hann013/dev/StringIOClose
authorEric Mellino <erme@microsoft.com>
Wed, 13 Jul 2016 21:50:18 +0000 (14:50 -0700)
committerGitHub <noreply@github.com>
Wed, 13 Jul 2016 21:50:18 +0000 (14:50 -0700)
Added Close() methods to String IO

Commit migrated from https://github.com/dotnet/corefx/commit/f54608d82af24ff3568d1b92bb16509dc680bed2


Trivial merge