[PATCH v4 0/1] MR7231: rpcrt4: Change some buffer wrap checks to satisfy Clang 20.

[William Horvath (＠whrvt)]

Soon-to-be-released Clang 20 introduced a [`-Wtautological-compare`](https://github.com/llvm/llvm-project/commit/6d34cfac53b993a6cdf3d6669e017eac...) warning which these checks trigger. Update them in a similar fashion to the example shown in the [Clang doc](https://github.com/llvm/llvm-project/blob/release/20.x/clang/docs/ReleaseNot...) (see "To avoid pointer addition overflow...").

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  v4: rpcrt4: Pointer arithmetic fixes (-Wtautological-compare).

https://gitlab.winehq.org/wine/wine/-/merge_requests/7231