[lld] [lld] check cache before real_path in loadDylib (PR #140791)

[Prabhu Rajasekaran via llvm-commits]

Prabhuk wrote:

Following up with more information. Some of the crash stack traces are listed in this bug: https://issues.fuchsia.dev/issues/421489509#comment4

https://github.com/llvm/llvm-project/pull/140791