Merge pull request dotnet/coreclr#10699 from adityamandaleeka/fix_env_empty_var_handling
authorAditya Mandaleeka <adityamandaleeka@users.noreply.github.com>
Tue, 4 Apr 2017 20:10:40 +0000 (13:10 -0700)
committerGitHub <noreply@github.com>
Tue, 4 Apr 2017 20:10:40 +0000 (13:10 -0700)
Fix handling of empty environment variables in PAL

Commit migrated from https://github.com/dotnet/coreclr/commit/3bf3915549eaa3c475f9dd899d9a6265dcde9908


Trivial merge