[clang] [Clang][SYCL] Fix use of uninitalized memory in temp files (PR #114488)

[Alexey Bader via cfe-commits]

bader wrote:

PR title: "[Clang][SYCL] Fix use of uninitalized memory in temp files" 

tag: [Clang][SYCL] -> [clang-sycl-linker]
typo: uninitalized -> uninitialized

https://github.com/llvm/llvm-project/pull/114488