Merge pull request dotnet/coreclr#9921 from adityamandaleeka/rt_dump_changes
authorAditya Mandaleeka <adityamandaleeka@users.noreply.github.com>
Fri, 3 Mar 2017 00:56:08 +0000 (16:56 -0800)
committerGitHub <noreply@github.com>
Fri, 3 Mar 2017 00:56:08 +0000 (16:56 -0800)
Fix error in dumpling text file cleanup

Commit migrated from https://github.com/dotnet/coreclr/commit/3391894b91475597209e28ef35a489629b3e76d6


Trivial merge