[clang] [NFC]Fix memory leak in HeaderSearchTest (PR #95927)

[Danial Klimkin via cfe-commits]

dklimkin wrote:

Hi AaronBallman, I think I opted to have a minimal change, it was on heap and I kept it this way. Seems not important for a test only code.

As per NFC, thank you for the note. I considered it NFC as the prod code behavior didn't change. I'll keep in mind any behavior change counts.

https://github.com/llvm/llvm-project/pull/95927