[libunwind][AIX] static_cast the value from getLR() to avoid the warning from -Wconversion (#69767)

This PR adds `static_cast` to the value returned from `getLR()` in the
AIX unwinder to avoid warning in case `-Wconversion` is specified to
build in 32-bit mode.

GitOrigin-RevId: 7c651a1fc006929674c0795086144f099c61ff8c
1 file changed
tree: 536babab82aabf5c86784f7260b8abe232997239
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT