[llvm] [lit][bazel] Fall back to a default PATHEXT when the variable is unset (PR #217416)

[via llvm-commits]

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@@ -333,7 +337,7 @@ def addAIXVersion(target_triple):
     """Add the AIX version to the given target triple,
     e.g. powerpc64-ibm-aix7.2.5.6
     """
-    os_cmd = "oslevel -s | awk -F\'-\' \'{printf \"%.1f.%d.%d\", $1/1000, $2, $3}\'"
+    os_cmd = "oslevel -s | awk -F'-' '{printf \"%.1f.%d.%d\", $1/1000, $2, $3}'"
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UebelAndre wrote:

Sorry! Accidental change. Removed!

https://github.com/llvm/llvm-project/pull/217416