Invert ternaries for LLD flags #1051
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It turns out that GHA expressions are JavaScript, where
true && '' || 'something'evaluates to 'something' (since the empty string is falsy). Because of this, we're inadvertently asking for LLD even when using the host toolchain.This change inverts the ternary logic to work around this.
Downstream run: https://github.com/thebrowsercompany/swift-build/actions/runs/19043582681 (still running, but it seems to be fine; we can grep the full logs for "lld" when it's done to see if we missed any).