[Issue 18367] dmd should not segfault on -X with libraries, but no source files

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18367

--- Comment #2 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/dlang/dmd

https://github.com/dlang/dmd/commit/7c0999581c1abb1f82874c67a06c15c23cdd41e0
Added -Xi to include new fields in JSON output

Fix issue 18367

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