[lld][WebAssembly] Fix use after free of archive path

[sbc100]

Summary

This was fixed in the ELF backend in https://reviews.llvm.org/D34554.

[dschuff]

lld/wasm/Driver.cpp

232 ↗

(On Diff #220560)

Should these debug prints be behind LLVM_DEBUG?

[sbc100]

• revert

lld/wasm/InputFiles.h

public:
   virtual ~InputFile() {}
 
   // Returns the filename.
   StringRef getName() const { return mb.getBufferIdentifier(); }
 
   Kind kind() const { return fileKind; }
 
   // An archive file name if this file is created from an archive.
-  StringRef archiveName;
+  std::string archiveName;
 
   ArrayRef<Symbol *> getSymbols() const { return symbols; }
 
   MutableArrayRef<Symbol *> getMutableSymbols() { return symbols; }
 
 protected:
   InputFile(Kind k, MemoryBufferRef m) : mb(m), fileKind(k) {}
   MemoryBufferRef mb;