[compiler-rt] [compiler-rt] Propagate sysroot from CMake to msan tests (PR #132299)

[Petr Hosek via llvm-commits]

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@@ -18,6 +18,11 @@
     ]
     + [config.target_cflags]
     + config.debug_info_flags
+    + (
+        ["--sysroot", config.cmake_sysroot]
+        if config.cmake_sysroot and config.host_os == "Linux"
+        else []
+    )
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petrhosek wrote:

I'd move this to a separate `if` block similar to other blocks below for readability.

https://github.com/llvm/llvm-project/pull/132299