[roll] Roll llvm-project/libc [libc] Fix incorrect unsigned comparison (#135595)

There is a problem with such unsigned comparison pattern:
```
if(unsigned_a - unsigned_b > 0) { /* only NOT go here when unsigned_a==unsigned_b */ }
```
When `unsigned_a` < `unsigned_b`, the result will still be `>0` due to
underflow.
This patch fixes two of the occurrences I found.
Also remove two redundant `if` where its condition is guaranteed by
outer `if`.

GitOrigin-RevId: 5b1083aab38652b13f37b26e8030ccdf82137e31
Original-Revision: 4fb298a8056bc6816505d7742536d16f7d120e1c
Change-Id: I57546585a4b743d19774f87217fe4263f3a96f28
1 file changed
tree: 42e029cdfbf4fe513e881c5bb3a9ec567187bd38
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cts
  6. firmware
  7. flower
  8. jiri.lock
  9. MILESTONE
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
  15. toolchain
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

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Obtaining the source

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