Fix buildbot breakage after https://reviews.llvm.org/D130309.

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -241,7 +241,7 @@ void ScriptInterpreterPython::ComputePythonDir(
   llvm::sys::path::append(path, LLDB_PYTHON_RELATIVE_LIBDIR);
 
 #if defined(_WIN32)
-  // This will be injected directly through FileSpec.GetDirectory().SetString(),
+  // This will be injected directly through FileSpec.SetDirectory(),
   // so we need to normalize manually.
   std::replace(path.begin(), path.end(), '\\', '/');
 #endif