Roll third_party/libunwind/src/ 2602aecdf..fc505746f (7 commits)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind.git/+log/2602aecdf4bf..fc505746f02c

Created with:
  roll-dep third_party/libunwind/src

Change-Id: I2769af8d8f901a6ef3ee938ca37411ea6c7b672c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/116010
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Alan Screen <awscreen@chromium.org>
diff --git a/DEPS b/DEPS
index 83f91f0..6acd772 100644
--- a/DEPS
+++ b/DEPS
@@ -158,7 +158,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libunwind
   # and whatever else without interference from each other.
-  'libunwind_revision': '2602aecdf4bfa2a4bd70722937b2ec503d8c46c8',
+  'libunwind_revision': 'fc505746f02c927d792bdeb328307e0e87500342',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling markupsafe
   # and whatever else without interference from each other.