Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1653

CRC32_u64 returns uint32_t, no need to cast returned result to uint32_t

Merge 90e7b063f39c6b1559a21832d764e500e1cdd40c into 9a61b00d

Merging this change closes #1653

COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1653 from pps83:CRC32_u64-cast 90e7b063f39c6b1559a21832d764e500e1cdd40c
PiperOrigin-RevId: 626462347
Change-Id: I748a2da5fcc66eb6aa07aaf0fbc7eca927fcbb16