[llvm] [llvm][Support][Windows] Fix slash in path for remove_directories (PR #121448)

[Jinsong Ji via llvm-commits]

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@@ -1326,6 +1326,9 @@ TEST_F(FileSystemTest, Remove) {
 
   ASSERT_NO_ERROR(fs::remove_directories("D:/footest"));
 
+  ASSERT_NO_ERROR(fs::remove_directories(Twine(BaseDir) + "/foo/bar/baz"));
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jsji wrote:

The path was created above in line 1306, we just did not test the removal of it.

https://github.com/llvm/llvm-project/pull/121448