[clang] [Clang] use begin member expr location for call expr with deducing this (PR #117345)

[Younan Zhang via cfe-commits]

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@@ -717,6 +717,8 @@ Bug Fixes to C++ Support
 - Clang now uses valid deduced type locations when diagnosing functions with trailing return type
   missing placeholder return type. (#GH78694)
 - Fixed a bug where bounds of partially expanded pack indexing expressions were checked too early. (#GH116105)
+- Clang now uses the location of the begin of the member expression for ``CallExpr``
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zyn0217 wrote:

It would fit better under `bug fixes to ast handling`, right?

https://github.com/llvm/llvm-project/pull/117345