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Summary

  1. clang/Modules: Clean up modules on error in ReadAST (details)
Commit c46b3a2abd38d6fecd389c97dfa7df54af77fdb9 by Duncan P. N. Exon Smith
clang/Modules: Clean up modules on error in ReadAST
ReadASTBlock and ReadASTExtensions can both return failures.  Be
consistent and remove all the just-loaded modules, just like when
ReadASTCore returns failures.
https://reviews.llvm.org/D70055
The file was modifiedclang/lib/Serialization/ASTReader.cpp