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Changes from Git (git http://labmaster3.local/git/llvm-project.git)

Summary

  1. Fix gcc `-Wunused-variable` warning. NFC. (details)
Commit 70b53a301888fe2be36996b41a7dd5aa7c256dc9 by michael.hliao
Fix gcc `-Wunused-variable` warning. NFC.
The file was modifiedclang/lib/Serialization/ASTReaderStmt.cpp