[llvm] [SPIR-V]: Memory leak fix in SPIRVEmitIntrinsics (PR #83015)

[Michal Paszkowski via llvm-commits]

https://github.com/michalpaszkowski approved this pull request.

LGTM! I will wait for other comments by the end of this week. Otherwise, assuming LITs and CTS pass, I will merge this change.

https://github.com/llvm/llvm-project/pull/83015