[llvm-branch-commits] [NFC][TSan] Remove nullptr location placeholders in ScopedReport (PR #228825)

[Vitaly Buka via llvm-branch-commits]

https://github.com/vitalybuka created https://github.com/llvm/llvm-project/pull/228825

Replace AddedLocationAddr and nullptr placeholders in ReportDesc::locs
with Vector<uptr> loc_addrs, and append symbolized data locations in
ScopedReport::SymbolizeStackElems() without needing a compaction pass.

Assisted-by: Gemini