Roll third_party/llvm-libc/src/ e9d9246e8..81a117beb (47 commits)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libc.git/+log/e9d9246e8dae..81a117beb4d0

Created with:
  roll-dep third_party/llvm-libc/src

Change-Id: I3eaea4674f178171c4016748f0abec51146a772b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/132871
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Auto-Submit: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index a18f995..8fadb15 100644
--- a/DEPS
+++ b/DEPS
@@ -176,7 +176,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling llvm-libc
   # and whatever else without interference from each other.
-  'llvm_libc_revision': 'e9d9246e8dae0416c37c01ea955e2d5429659c54',
+  'llvm_libc_revision': '81a117beb4d0cd02b43c4e0192ebdde2f9fd8bde',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling markupsafe
   # and whatever else without interference from each other.