[stable] Fix silly dmd.parse regression

[kinke]

Sorry; introduced in #9119.

[dlang-bot]

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Testing this PR locally

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[WalterBright]

Since this was a regression, and there have been many involving incorrect conversions of for loops to foreach, can you supply a test case to ensure it doesn't happen again?

[kinke]

Existing testcase slightly extended to cover both line endings, independent from used autocrlf git setting.