[Issue 9975] pointsTo asserts because of false pointer in union

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=9975

--- Comment #15 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/0ae323dc6f0eff18490cb6d58fc288870b154892
Merge pull request #2167 from monarchdodra/pointsTo

Fix issues 9975 & 12479

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