fix typos

fix typos

Fix below buildbot failure.

```
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:172:42: error: use of undeclared identifier 'uint'
  172 |           Printf("Flag: %s %u\n", Name, (uint)Val);
```

Replace uint with uint32_t cast.

This reverts commit 8062b166762b51f1c3a9168e7031babde3e330a8.

This reverts commit b44e6e01f7f778bbb569e07821f5ddfdb90c4d4d.

This pull request addresses fixes against violations happening under
subcategory 'cpp/wrong-type-format-argument' related to
dfsan,fuzzer,hwasan.

In C, it is UB to call `memcmp(NULL, NULL, 0)`, `memcpy(NULL, NULL, 0)`,
etc. Unfortunately, `(NULL, 0)` is the natural representation of an
empty sequence of objects and extremely common in real world code. As a
result, all C code, and C++ code which calls into C functions, must
carefully guard all calls to `memcpy`.

This is a serious, real world usability issue in C and should be fixed
in the language (see #49459). In the meantime, pay the cost of the extra
branch to avoid tripping UBSan in libFuzzer. Once the usability problem
in C has been fixed, these checks can be removed.

Fixes #96772

Avoid some unneccessary copy

Reviewed By: fmayer

Differential Revision: https://reviews.llvm.org/D145758

Some printf format strings in libfuzzer are using the wrong specifizers, fix in this commit.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D145033