[llvm-branch-commits] [libcxx] [libc++][chrono] Completes the tzdb class. (PR #82157)

[Louis Dionne via llvm-branch-commits]

================
@@ -43,6 +44,40 @@ struct tzdb {
   vector<time_zone_link> links;
 
   vector<leap_second> leap_seconds;
+
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const time_zone* __locate_zone(string_view __name) const {
+    if (const time_zone* __result = __find_in_zone(__name); __result)
+      return __result;
+
+    if (auto __it = ranges::lower_bound(links, __name, {}, &time_zone_link::name);
+        __it != links.end() && __it->name() == __name)
+      if (const time_zone* __result = __find_in_zone(__it->target()); __result)
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ldionne wrote:

```suggestion
      if (const time_zone* __result = __find_in_zone(__it->target()))
```

https://github.com/llvm/llvm-project/pull/82157