Fix "unsafe narrowing" warnings in absl, 1/n.

Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare

(This specific CL focuses on .h and win32 .inc files.)

Bug: chromium:1292951
PiperOrigin-RevId: 463835431
Change-Id: If8e5f7f651d5cd96035e23e4623bdb08a7fedabe

1 files changed, 2 insertions, 1 deletions

diff --git a/absl/synchronization/internal/kernel_timeout.h b/absl/synchronization/internal/kernel_timeout.h
index bbd4d2d7..44a3a2e8 100644
--- a/absl/synchronization/internal/kernel_timeout.h
+++ b/absl/synchronization/internal/kernel_timeout.h
@@ -111,7 +111,8 @@ class KernelTimeout {
       constexpr uint64_t max_nanos =
           (std::numeric_limits<int64_t>::max)() - 999999u;
       uint64_t ms_from_now =
-          (std::min<uint64_t>(max_nanos, ns_ - now) + 999999u) / 1000000u;
+          ((std::min)(max_nanos, static_cast<uint64_t>(ns_ - now)) + 999999u) /
+          1000000u;
       if (ms_from_now > kInfinite) {
         return kInfinite;
       }