[libunwind] Compile with -Wunused-but-set-variable

-Wunused-but-set-variable triggers a warning even the block of code is effectively dead.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D107835

GitOrigin-RevId: 6b6d3447317673015f62206b2669c2d0a74132dc
4 files changed
tree: 2e528fb8e890aa6720e71dede6a38770a56bf67a
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT