[clangd] Fix an accident change in r342999.

llvm-svn: 344054

diff --git a/clang-tools-extra/clangd/index/YAMLSerialization.cpp b/clang-tools-extra/clangd/index/YAMLSerialization.cpp
index a426cce..06c4ef7 100644 (file)
--- a/clang-tools-extra/clangd/index/YAMLSerialization.cpp
+++ b/clang-tools-extra/clangd/index/YAMLSerialization.cpp
@@ -286,7 +286,7 @@ std::string toYAML(const Symbol &S) {
     llvm::raw_string_ostream OS(Buf);
     llvm::yaml::Output Yout(OS);
     Symbol Sym = S; // copy: Yout<< requires mutability.
-    OS << Sym;
+    Yout << Sym;
   }
   return Buf;
 }