[llvm] [CMake] Fix config when static zstd libraries are not found (PR #113584)

[Udit Kumar Agarwal via llvm-commits]

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@@ -196,7 +196,18 @@ if(LLVM_ENABLE_ZSTD)
     find_package(zstd QUIET)
   endif()
 endif()
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uditagarwal97 wrote:

That's a fair point. I've moved it inside the parent `if` in https://github.com/llvm/llvm-project/pull/113584/commits/c6983683e109a25caa718ab5a4a72009f055cd22

https://github.com/llvm/llvm-project/pull/113584