[Issue 12130] Segmentation fault if HOME environment variable does not exist

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12130

--- Comment #8 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/9b6ecade13236c97a70d1aa66afa13336379d6dc
Merge pull request #3980 from quickfur/issue12130

Check for NULL when looking up getenv("HOME").

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